./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/array_4.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-acceleration/array_4.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 e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 --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 17:54:57,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 17:54:57,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 17:54:57,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 17:54:57,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 17:54:57,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 17:54:57,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 17:54:57,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 17:54:57,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 17:54:57,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 17:54:57,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 17:54:57,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 17:54:57,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 17:54:57,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 17:54:57,260 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 17:54:57,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 17:54:57,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 17:54:57,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 17:54:57,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 17:54:57,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 17:54:57,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 17:54:57,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 17:54:57,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 17:54:57,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 17:54:57,263 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 17:54:57,263 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 17:54:57,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 17:54:57,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 17:54:57,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 17:54:57,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 17:54:57,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 17:54:57,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 17:54:57,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:54:57,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 17:54:57,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 17:54:57,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 17:54:57,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 17:54:57,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 17:54:57,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 17:54:57,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 17:54:57,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 17:54:57,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 17:54:57,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c27e61ac5d5a22c0e00a5dbac1b872460567877a501387ed9d5bda89096498 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 17:54:57,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 17:54:57,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 17:54:57,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 17:54:57,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 17:54:57,622 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 17:54:57,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/array_4.i [2024-09-12 17:54:59,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 17:54:59,360 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 17:54:59,360 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/array_4.i [2024-09-12 17:54:59,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/009520685/ae285d075cb74efd9541aca9cde625cd/FLAG5516e503f [2024-09-12 17:54:59,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/009520685/ae285d075cb74efd9541aca9cde625cd [2024-09-12 17:54:59,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 17:54:59,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 17:54:59,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 17:54:59,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 17:54:59,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 17:54:59,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:59" (1/1) ... [2024-09-12 17:54:59,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2048a1d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:54:59, skipping insertion in model container [2024-09-12 17:54:59,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 05:54:59" (1/1) ... [2024-09-12 17:54:59,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 17:54:59,945 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-acceleration/array_4.i[848,861] [2024-09-12 17:54:59,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:54:59,977 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 17:54:59,995 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-acceleration/array_4.i[848,861] [2024-09-12 17:55:00,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 17:55:00,021 INFO L204 MainTranslator]: Completed translation [2024-09-12 17:55:00,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00 WrapperNode [2024-09-12 17:55:00,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 17:55:00,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 17:55:00,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 17:55:00,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 17:55:00,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,043 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 17:55:00,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 17:55:00,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 17:55:00,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 17:55:00,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 17:55:00,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,072 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-09-12 17:55:00,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,083 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 17:55:00,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 17:55:00,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 17:55:00,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 17:55:00,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (1/1) ... [2024-09-12 17:55:00,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 17:55:00,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:00,121 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 17:55:00,127 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 17:55:00,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 17:55:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 17:55:00,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 17:55:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 17:55:00,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 17:55:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 17:55:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 17:55:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 17:55:00,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 17:55:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 17:55:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 17:55:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 17:55:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 17:55:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 17:55:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 17:55:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 17:55:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 17:55:00,246 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 17:55:00,251 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 17:55:00,423 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-12 17:55:00,424 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 17:55:00,464 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 17:55:00,464 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 17:55:00,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:55:00 BoogieIcfgContainer [2024-09-12 17:55:00,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 17:55:00,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 17:55:00,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 17:55:00,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 17:55:00,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 05:54:59" (1/3) ... [2024-09-12 17:55:00,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e1ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:55:00, skipping insertion in model container [2024-09-12 17:55:00,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 05:55:00" (2/3) ... [2024-09-12 17:55:00,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e1ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 05:55:00, skipping insertion in model container [2024-09-12 17:55:00,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 05:55:00" (3/3) ... [2024-09-12 17:55:00,476 INFO L112 eAbstractionObserver]: Analyzing ICFG array_4.i [2024-09-12 17:55:00,493 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 17:55:00,493 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-12 17:55:00,558 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 17:55:00,564 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;@3b0be7e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 17:55:00,564 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-12 17:55:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.625) internal successors, (26), 21 states have internal predecessors, (26), 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 17:55:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-12 17:55:00,575 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:00,576 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:00,576 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:00,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash -699379068, now seen corresponding path program 1 times [2024-09-12 17:55:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:00,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505317409] [2024-09-12 17:55:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:00,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:00,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:00,869 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 17:55:00,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:00,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505317409] [2024-09-12 17:55:00,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505317409] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:00,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:55:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:55:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032602803] [2024-09-12 17:55:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:00,877 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:55:00,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:55:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:55:00,898 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.625) internal successors, (26), 21 states have internal predecessors, (26), 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 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 17:55:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:00,972 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2024-09-12 17:55:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:55:00,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 7 [2024-09-12 17:55:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:00,981 INFO L225 Difference]: With dead ends: 56 [2024-09-12 17:55:00,981 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 17:55:00,984 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 17:55:00,987 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:00,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 17:55:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-09-12 17:55:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 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 17:55:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-12 17:55:01,024 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 7 [2024-09-12 17:55:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:01,024 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-12 17:55:01,025 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 17:55:01,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-12 17:55:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 17:55:01,026 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:01,027 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:01,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 17:55:01,027 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:01,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash -315416714, now seen corresponding path program 1 times [2024-09-12 17:55:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:01,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149788684] [2024-09-12 17:55:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,213 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 17:55:01,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:01,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149788684] [2024-09-12 17:55:01,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149788684] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:01,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531990029] [2024-09-12 17:55:01,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:01,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:01,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:01,220 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 17:55:01,222 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 17:55:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-12 17:55:01,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:01,484 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 17:55:01,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:55:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531990029] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:01,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:55:01,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-12 17:55:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041801083] [2024-09-12 17:55:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:01,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 17:55:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 17:55:01,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 17:55:01,493 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:01,560 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-12 17:55:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 17:55:01,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 17:55:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:01,561 INFO L225 Difference]: With dead ends: 28 [2024-09-12 17:55:01,562 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 17:55:01,562 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 17:55:01,563 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:01,564 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 17:55:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2024-09-12 17:55:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 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 17:55:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-12 17:55:01,575 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2024-09-12 17:55:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:01,575 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-12 17:55:01,576 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-12 17:55:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 17:55:01,578 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:01,578 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:01,596 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 17:55:01,779 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:01,780 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:01,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1187983498, now seen corresponding path program 1 times [2024-09-12 17:55:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:01,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329225944] [2024-09-12 17:55:01,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 17:55:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329225944] [2024-09-12 17:55:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329225944] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:01,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:55:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 17:55:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121322356] [2024-09-12 17:55:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:01,865 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 17:55:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:01,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 17:55:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 17:55:01,867 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:01,880 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-09-12 17:55:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 17:55:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 17:55:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:01,882 INFO L225 Difference]: With dead ends: 24 [2024-09-12 17:55:01,882 INFO L226 Difference]: Without dead ends: 23 [2024-09-12 17:55:01,882 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 17:55:01,883 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:01,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:01,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-12 17:55:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-12 17:55:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 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 17:55:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-12 17:55:01,889 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2024-09-12 17:55:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:01,890 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-12 17:55:01,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-12 17:55:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 17:55:01,891 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:01,892 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:01,892 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 17:55:01,892 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:01,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 757631391, now seen corresponding path program 1 times [2024-09-12 17:55:01,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:01,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581350859] [2024-09-12 17:55:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581350859] [2024-09-12 17:55:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581350859] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792602729] [2024-09-12 17:55:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:01,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:01,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:01,967 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 17:55:01,968 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 17:55:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 17:55:02,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:02,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 17:55:02,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792602729] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:02,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:02,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-12 17:55:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366179548] [2024-09-12 17:55:02,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:02,097 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 17:55:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 17:55:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 17:55:02,098 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 17:55:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:02,139 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-12 17:55:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 17:55:02,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 17:55:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:02,142 INFO L225 Difference]: With dead ends: 42 [2024-09-12 17:55:02,142 INFO L226 Difference]: Without dead ends: 30 [2024-09-12 17:55:02,143 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-09-12 17:55:02,143 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:02,144 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-12 17:55:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-09-12 17:55:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 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 17:55:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-12 17:55:02,155 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 13 [2024-09-12 17:55:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:02,156 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-12 17:55:02,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 17:55:02,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-12 17:55:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 17:55:02,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:02,161 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:02,177 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 17:55:02,361 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:02,362 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:02,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2041185185, now seen corresponding path program 2 times [2024-09-12 17:55:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299598880] [2024-09-12 17:55:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299598880] [2024-09-12 17:55:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299598880] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:02,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:55:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 17:55:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30936749] [2024-09-12 17:55:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:02,439 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-12 17:55:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-12 17:55:02,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-12 17:55:02,440 INFO L87 Difference]: Start difference. First operand 27 states and 28 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 17:55:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:02,469 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-09-12 17:55:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:55:02,470 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 19 [2024-09-12 17:55:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:02,471 INFO L225 Difference]: With dead ends: 34 [2024-09-12 17:55:02,471 INFO L226 Difference]: Without dead ends: 32 [2024-09-12 17:55:02,471 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 17:55:02,474 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:02,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-12 17:55:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-09-12 17:55:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 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 17:55:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-09-12 17:55:02,483 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 19 [2024-09-12 17:55:02,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:02,484 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-09-12 17:55:02,484 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 17:55:02,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,484 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-09-12 17:55:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 17:55:02,485 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:02,485 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:02,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 17:55:02,486 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:02,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash -836067537, now seen corresponding path program 1 times [2024-09-12 17:55:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864769248] [2024-09-12 17:55:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:02,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864769248] [2024-09-12 17:55:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864769248] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:02,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 17:55:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 17:55:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014752054] [2024-09-12 17:55:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:02,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 17:55:02,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 17:55:02,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 17:55:02,580 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:02,631 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-09-12 17:55:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 17:55:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-09-12 17:55:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:02,632 INFO L225 Difference]: With dead ends: 36 [2024-09-12 17:55:02,632 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 17:55:02,632 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 17:55:02,633 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:02,633 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:02,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 17:55:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-12 17:55:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.1666666666666667) 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 17:55:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-12 17:55:02,641 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2024-09-12 17:55:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:02,642 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-12 17:55:02,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:02,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-12 17:55:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-12 17:55:02,643 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:02,643 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:02,643 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-12 17:55:02,644 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:02,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash 944776979, now seen corresponding path program 1 times [2024-09-12 17:55:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:02,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451895223] [2024-09-12 17:55:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:02,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451895223] [2024-09-12 17:55:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451895223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803823556] [2024-09-12 17:55:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:02,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:02,770 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 17:55:02,774 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 17:55:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:02,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 17:55:02,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:02,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803823556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:03,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-09-12 17:55:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785144460] [2024-09-12 17:55:03,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:03,029 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 17:55:03,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 17:55:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:55:03,030 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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 17:55:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:03,101 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-09-12 17:55:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 17:55:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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 23 [2024-09-12 17:55:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:03,103 INFO L225 Difference]: With dead ends: 59 [2024-09-12 17:55:03,103 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 17:55:03,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-09-12 17:55:03,104 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:03,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 17:55:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-12 17:55:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 38 states have internal predecessors, (40), 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 17:55:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2024-09-12 17:55:03,112 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 23 [2024-09-12 17:55:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:03,112 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2024-09-12 17:55:03,112 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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 17:55:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2024-09-12 17:55:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-12 17:55:03,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:03,116 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:03,132 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 17:55:03,319 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 17:55:03,321 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:03,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1009967981, now seen corresponding path program 2 times [2024-09-12 17:55:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581838335] [2024-09-12 17:55:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:03,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:03,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581838335] [2024-09-12 17:55:03,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581838335] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:03,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860188998] [2024-09-12 17:55:03,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:03,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:03,658 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 17:55:03,661 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 17:55:03,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:03,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:03,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 17:55:03,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:03,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:04,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860188998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:04,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2024-09-12 17:55:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627694503] [2024-09-12 17:55:04,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:04,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-12 17:55:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-12 17:55:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 17:55:04,115 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 17:55:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:04,223 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2024-09-12 17:55:04,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 17:55:04,224 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 35 [2024-09-12 17:55:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:04,225 INFO L225 Difference]: With dead ends: 83 [2024-09-12 17:55:04,225 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 17:55:04,226 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 17:55:04,227 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:04,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 119 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 17:55:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-12 17:55:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 62 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 17:55:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-09-12 17:55:04,244 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 35 [2024-09-12 17:55:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:04,245 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-09-12 17:55:04,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 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 17:55:04,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-09-12 17:55:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-12 17:55:04,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:04,247 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:04,260 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 17:55:04,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:04,450 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:04,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash -983939181, now seen corresponding path program 3 times [2024-09-12 17:55:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:04,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841469270] [2024-09-12 17:55:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:04,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 17:55:05,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:05,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841469270] [2024-09-12 17:55:05,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841469270] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:05,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288431430] [2024-09-12 17:55:05,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:55:05,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:05,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:05,246 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 17:55:05,249 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 17:55:05,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-12 17:55:05,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:05,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 17:55:05,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-12 17:55:05,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 17:55:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288431430] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 17:55:05,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 17:55:05,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [33] total 36 [2024-09-12 17:55:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786289418] [2024-09-12 17:55:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 17:55:05,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 17:55:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 17:55:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 17:55:05,409 INFO L87 Difference]: Start difference. First operand 67 states and 68 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 17:55:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:05,441 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-09-12 17:55:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-12 17:55:05,441 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 59 [2024-09-12 17:55:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:05,443 INFO L225 Difference]: With dead ends: 67 [2024-09-12 17:55:05,443 INFO L226 Difference]: Without dead ends: 66 [2024-09-12 17:55:05,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2024-09-12 17:55:05,444 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:05,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 17:55:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-12 17:55:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-12 17:55:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.05) internal successors, (63), 61 states have internal predecessors, (63), 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 17:55:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-09-12 17:55:05,455 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 59 [2024-09-12 17:55:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:05,456 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-09-12 17:55:05,456 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 17:55:05,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-09-12 17:55:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 17:55:05,459 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:05,459 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:05,478 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 17:55:05,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:05,660 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:05,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash -437343476, now seen corresponding path program 1 times [2024-09-12 17:55:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:05,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977436211] [2024-09-12 17:55:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-12 17:55:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977436211] [2024-09-12 17:55:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977436211] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827534770] [2024-09-12 17:55:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:05,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:05,784 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 17:55:05,786 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 17:55:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:05,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 17:55:05,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 17:55:06,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 17:55:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827534770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:07,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:07,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 33, 33] total 67 [2024-09-12 17:55:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424347446] [2024-09-12 17:55:07,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:07,322 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 17:55:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 17:55:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1095, Invalid=3327, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 17:55:07,326 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 67 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 67 states have internal predecessors, (115), 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 17:55:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:07,500 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2024-09-12 17:55:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-12 17:55:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 67 states have internal predecessors, (115), 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 60 [2024-09-12 17:55:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:07,502 INFO L225 Difference]: With dead ends: 137 [2024-09-12 17:55:07,502 INFO L226 Difference]: Without dead ends: 122 [2024-09-12 17:55:07,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1095, Invalid=3327, Unknown=0, NotChecked=0, Total=4422 [2024-09-12 17:55:07,505 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:07,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 17:55:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-12 17:55:07,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2024-09-12 17:55:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.0357142857142858) internal successors, (116), 113 states have internal predecessors, (116), 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 17:55:07,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2024-09-12 17:55:07,528 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 60 [2024-09-12 17:55:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:07,528 INFO L474 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2024-09-12 17:55:07,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 67 states have internal predecessors, (115), 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 17:55:07,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2024-09-12 17:55:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-12 17:55:07,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:07,534 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:07,554 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 17:55:07,735 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 17:55:07,735 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:07,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1957101947, now seen corresponding path program 1 times [2024-09-12 17:55:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:07,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590122353] [2024-09-12 17:55:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:08,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1426 trivial. 0 not checked. [2024-09-12 17:55:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590122353] [2024-09-12 17:55:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590122353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222696198] [2024-09-12 17:55:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:08,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:08,017 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 17:55:08,018 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 17:55:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:08,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-12 17:55:08,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:55:09,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 17:55:12,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222696198] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:12,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:12,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 65, 65] total 132 [2024-09-12 17:55:12,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107368616] [2024-09-12 17:55:12,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:12,509 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-09-12 17:55:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-09-12 17:55:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4232, Invalid=13060, Unknown=0, NotChecked=0, Total=17292 [2024-09-12 17:55:12,514 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 132 states, 132 states have (on average 1.621212121212121) internal successors, (214), 131 states have internal predecessors, (214), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:12,878 INFO L93 Difference]: Finished difference Result 236 states and 271 transitions. [2024-09-12 17:55:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-09-12 17:55:12,878 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.621212121212121) internal successors, (214), 131 states have internal predecessors, (214), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2024-09-12 17:55:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:12,880 INFO L225 Difference]: With dead ends: 236 [2024-09-12 17:55:12,880 INFO L226 Difference]: Without dead ends: 214 [2024-09-12 17:55:12,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5086 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4236, Invalid=13320, Unknown=0, NotChecked=0, Total=17556 [2024-09-12 17:55:12,884 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:12,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 100 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 17:55:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-09-12 17:55:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-09-12 17:55:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.0144230769230769) internal successors, (211), 209 states have internal predecessors, (211), 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 17:55:12,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 215 transitions. [2024-09-12 17:55:12,911 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 215 transitions. Word has length 110 [2024-09-12 17:55:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:12,911 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 215 transitions. [2024-09-12 17:55:12,911 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.621212121212121) internal successors, (214), 131 states have internal predecessors, (214), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 17:55:12,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 215 transitions. [2024-09-12 17:55:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-12 17:55:12,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:12,915 INFO L216 NwaCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:12,928 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 17:55:13,115 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:13,116 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:13,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -966095144, now seen corresponding path program 2 times [2024-09-12 17:55:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:13,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654807220] [2024-09-12 17:55:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:20,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5934 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:20,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654807220] [2024-09-12 17:55:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654807220] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396781208] [2024-09-12 17:55:20,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:55:20,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:20,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:20,670 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 17:55:20,672 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 17:55:20,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:55:20,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:20,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-12 17:55:20,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5934 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:21,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:55:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5934 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396781208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:55:31,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:55:31,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 258 [2024-09-12 17:55:31,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803343869] [2024-09-12 17:55:31,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:55:31,502 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2024-09-12 17:55:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:55:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2024-09-12 17:55:31,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2024-09-12 17:55:31,512 INFO L87 Difference]: Start difference. First operand 214 states and 215 transitions. Second operand has 258 states, 258 states have (on average 1.5232558139534884) internal successors, (393), 258 states have internal predecessors, (393), 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 17:55:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:55:32,172 INFO L93 Difference]: Finished difference Result 425 states and 490 transitions. [2024-09-12 17:55:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2024-09-12 17:55:32,173 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 1.5232558139534884) internal successors, (393), 258 states have internal predecessors, (393), 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 208 [2024-09-12 17:55:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:55:32,176 INFO L225 Difference]: With dead ends: 425 [2024-09-12 17:55:32,176 INFO L226 Difference]: Without dead ends: 406 [2024-09-12 17:55:32,180 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20662 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2024-09-12 17:55:32,180 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:55:32,181 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 116 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:55:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-09-12 17:55:32,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2024-09-12 17:55:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 400 states have (on average 1.0075) internal successors, (403), 401 states have internal predecessors, (403), 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 17:55:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 407 transitions. [2024-09-12 17:55:32,235 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 407 transitions. Word has length 208 [2024-09-12 17:55:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:55:32,235 INFO L474 AbstractCegarLoop]: Abstraction has 406 states and 407 transitions. [2024-09-12 17:55:32,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 1.5232558139534884) internal successors, (393), 258 states have internal predecessors, (393), 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 17:55:32,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 407 transitions. [2024-09-12 17:55:32,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-09-12 17:55:32,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:55:32,245 INFO L216 NwaCegarLoop]: trace histogram [127, 127, 127, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:55:32,262 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 17:55:32,446 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:32,446 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:55:32,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:55:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 53229272, now seen corresponding path program 3 times [2024-09-12 17:55:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:55:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871930123] [2024-09-12 17:55:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:55:32,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:55:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:58,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:55:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:55:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 24142 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 17:55:58,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:55:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871930123] [2024-09-12 17:55:58,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871930123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:55:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813256963] [2024-09-12 17:55:58,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 17:55:58,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:55:58,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:55:58,947 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 17:55:58,948 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 17:55:59,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 17:55:59,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:55:59,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 17:55:59,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:55:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 24142 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24130 trivial. 0 not checked. [2024-09-12 17:55:59,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:56:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 24142 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24130 trivial. 0 not checked. [2024-09-12 17:56:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813256963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:56:00,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:56:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 7, 7] total 267 [2024-09-12 17:56:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588504946] [2024-09-12 17:56:00,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:56:00,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 267 states [2024-09-12 17:56:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:56:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 267 interpolants. [2024-09-12 17:56:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17193, Invalid=53829, Unknown=0, NotChecked=0, Total=71022 [2024-09-12 17:56:00,111 INFO L87 Difference]: Start difference. First operand 406 states and 407 transitions. Second operand has 267 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 267 states have internal predecessors, (421), 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 17:56:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:56:00,769 INFO L93 Difference]: Finished difference Result 448 states and 458 transitions. [2024-09-12 17:56:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2024-09-12 17:56:00,770 INFO L78 Accepts]: Start accepts. Automaton has has 267 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 267 states have internal predecessors, (421), 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 400 [2024-09-12 17:56:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:56:00,772 INFO L225 Difference]: With dead ends: 448 [2024-09-12 17:56:00,772 INFO L226 Difference]: Without dead ends: 429 [2024-09-12 17:56:00,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 793 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18313 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=17193, Invalid=53829, Unknown=0, NotChecked=0, Total=71022 [2024-09-12 17:56:00,775 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 17:56:00,776 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 157 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 17:56:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-09-12 17:56:00,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 425. [2024-09-12 17:56:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.0167064439140812) internal successors, (426), 420 states have internal predecessors, (426), 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 17:56:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 430 transitions. [2024-09-12 17:56:00,807 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 430 transitions. Word has length 400 [2024-09-12 17:56:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:56:00,808 INFO L474 AbstractCegarLoop]: Abstraction has 425 states and 430 transitions. [2024-09-12 17:56:00,808 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 267 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 267 states have internal predecessors, (421), 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 17:56:00,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 430 transitions. [2024-09-12 17:56:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-12 17:56:00,813 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:56:00,814 INFO L216 NwaCegarLoop]: trace histogram [128, 128, 128, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:56:00,830 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 17:56:01,014 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 17:56:01,014 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:56:01,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:56:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1125337109, now seen corresponding path program 2 times [2024-09-12 17:56:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:56:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175908453] [2024-09-12 17:56:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:56:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:56:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:25,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 17:56:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 17:56:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24520 backedges. 0 proven. 24512 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 17:56:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 17:56:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175908453] [2024-09-12 17:56:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175908453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 17:56:25,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823929825] [2024-09-12 17:56:25,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 17:56:25,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 17:56:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 17:56:25,953 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 17:56:25,954 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 17:56:26,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 17:56:26,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 17:56:26,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 258 conjuncts are in the unsatisfiable core [2024-09-12 17:56:26,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 17:56:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24520 backedges. 0 proven. 24512 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 17:56:26,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 17:57:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 24520 backedges. 0 proven. 24512 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 17:57:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823929825] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 17:57:08,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 17:57:08,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [259, 259, 259] total 518 [2024-09-12 17:57:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559447725] [2024-09-12 17:57:08,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 17:57:08,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 518 states [2024-09-12 17:57:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 17:57:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 518 interpolants. [2024-09-12 17:57:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67340, Invalid=200466, Unknown=0, NotChecked=0, Total=267806 [2024-09-12 17:57:08,356 INFO L87 Difference]: Start difference. First operand 425 states and 430 transitions. Second operand has 518 states, 518 states have (on average 1.5173745173745175) internal successors, (786), 518 states have internal predecessors, (786), 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 17:57:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 17:57:11,887 INFO L93 Difference]: Finished difference Result 847 states and 985 transitions. [2024-09-12 17:57:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 515 states. [2024-09-12 17:57:11,888 INFO L78 Accepts]: Start accepts. Automaton has has 518 states, 518 states have (on average 1.5173745173745175) internal successors, (786), 518 states have internal predecessors, (786), 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 405 [2024-09-12 17:57:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 17:57:11,893 INFO L225 Difference]: With dead ends: 847 [2024-09-12 17:57:11,893 INFO L226 Difference]: Without dead ends: 812 [2024-09-12 17:57:11,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83582 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=67340, Invalid=200466, Unknown=0, NotChecked=0, Total=267806 [2024-09-12 17:57:11,906 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-12 17:57:11,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 106 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-12 17:57:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-09-12 17:57:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2024-09-12 17:57:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 806 states have (on average 1.0086848635235732) internal successors, (813), 807 states have internal predecessors, (813), 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 17:57:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 817 transitions. [2024-09-12 17:57:11,955 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 817 transitions. Word has length 405 [2024-09-12 17:57:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 17:57:11,956 INFO L474 AbstractCegarLoop]: Abstraction has 812 states and 817 transitions. [2024-09-12 17:57:11,957 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 518 states, 518 states have (on average 1.5173745173745175) internal successors, (786), 518 states have internal predecessors, (786), 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 17:57:11,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 817 transitions. [2024-09-12 17:57:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2024-09-12 17:57:11,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 17:57:11,964 INFO L216 NwaCegarLoop]: trace histogram [257, 257, 257, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 17:57:11,984 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 17:57:12,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 17:57:12,165 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-09-12 17:57:12,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 17:57:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1021086329, now seen corresponding path program 3 times [2024-09-12 17:57:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 17:57:12,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484074837] [2024-09-12 17:57:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 17:57:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 17:57:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat