./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:45:47,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:45:47,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:45:47,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:45:47,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:45:47,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:45:47,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:45:47,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:45:47,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:45:47,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:45:47,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:45:47,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:45:47,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:45:47,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:45:47,548 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:45:47,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:45:47,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:45:47,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:45:47,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:45:47,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:45:47,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:45:47,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:45:47,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:45:47,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:45:47,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:45:47,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:45:47,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:45:47,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:45:47,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:45:47,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:45:47,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:45:47,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:45:47,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:45:47,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:45:47,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:45:47,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:45:47,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:45:47,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:45:47,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:45:47,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:45:47,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:45:47,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:45:47,765 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:45:47,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2024-09-17 18:45:48,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:45:49,083 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:45:49,084 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2024-09-17 18:45:49,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4f2c2bbbc/0e2c041792d64aa79972bdb2056e9b63/FLAG7a9e29607 [2024-09-17 18:45:49,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4f2c2bbbc/0e2c041792d64aa79972bdb2056e9b63 [2024-09-17 18:45:49,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:45:49,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:45:49,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:45:49,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:45:49,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:45:49,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2418aca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49, skipping insertion in model container [2024-09-17 18:45:49,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:45:49,652 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2024-09-17 18:45:49,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:45:49,675 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:45:49,684 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2024-09-17 18:45:49,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:45:49,705 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:45:49,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49 WrapperNode [2024-09-17 18:45:49,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:45:49,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:45:49,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:45:49,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:45:49,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,729 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:45:49,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:45:49,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:45:49,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:45:49,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:45:49,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,766 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-17 18:45:49,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:45:49,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:45:49,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:45:49,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:45:49,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (1/1) ... [2024-09-17 18:45:49,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:45:49,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:49,811 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) [2024-09-17 18:45:49,814 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 [2024-09-17 18:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 18:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 18:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:45:49,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:45:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:45:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:45:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:45:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:45:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:45:49,908 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:45:49,910 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:45:50,035 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-17 18:45:50,035 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:45:50,053 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:45:50,054 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 18:45:50,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:45:50 BoogieIcfgContainer [2024-09-17 18:45:50,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:45:50,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:45:50,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:45:50,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:45:50,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:45:49" (1/3) ... [2024-09-17 18:45:50,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5810d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:45:50, skipping insertion in model container [2024-09-17 18:45:50,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:45:49" (2/3) ... [2024-09-17 18:45:50,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5810d721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:45:50, skipping insertion in model container [2024-09-17 18:45:50,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:45:50" (3/3) ... [2024-09-17 18:45:50,063 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2024-09-17 18:45:50,090 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:45:50,090 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:45:50,131 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:45:50,138 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;@7efa733c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:45:50,139 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:45:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:45:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 18:45:50,150 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:50,150 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:50,151 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:50,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash 963610160, now seen corresponding path program 1 times [2024-09-17 18:45:50,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:50,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180991349] [2024-09-17 18:45:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:45:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:45:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:45:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:45:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:45:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:45:50,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180991349] [2024-09-17 18:45:50,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180991349] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:50,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:50,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:45:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083485905] [2024-09-17 18:45:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:50,322 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:45:50,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:45:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:45:50,341 INFO L87 Difference]: Start difference. First operand has 35 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:45:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:50,371 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2024-09-17 18:45:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:45:50,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-17 18:45:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:50,380 INFO L225 Difference]: With dead ends: 64 [2024-09-17 18:45:50,380 INFO L226 Difference]: Without dead ends: 31 [2024-09-17 18:45:50,384 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:45:50,386 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:50,387 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-17 18:45:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-17 18:45:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-17 18:45:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2024-09-17 18:45:50,446 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 32 [2024-09-17 18:45:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:50,446 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2024-09-17 18:45:50,447 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 18:45:50,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2024-09-17 18:45:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 18:45:50,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:50,448 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:50,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:45:50,449 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:50,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash -914175556, now seen corresponding path program 1 times [2024-09-17 18:45:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:50,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920645441] [2024-09-17 18:45:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:50,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642788075] [2024-09-17 18:45:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:50,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:50,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:50,487 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) [2024-09-17 18:45:50,492 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:45:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:45:50,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:45:50,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:45:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920645441] [2024-09-17 18:45:50,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642788075] [2024-09-17 18:45:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642788075] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:50,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:50,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:45:50,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14164087] [2024-09-17 18:45:50,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:50,628 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:45:50,629 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-17 18:45:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:50,703 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-09-17 18:45:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:50,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-09-17 18:45:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:50,705 INFO L225 Difference]: With dead ends: 47 [2024-09-17 18:45:50,705 INFO L226 Difference]: Without dead ends: 45 [2024-09-17 18:45:50,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:45:50,707 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:50,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-17 18:45:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-09-17 18:45:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-17 18:45:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-09-17 18:45:50,721 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 32 [2024-09-17 18:45:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:50,722 INFO L474 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-09-17 18:45:50,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-17 18:45:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-09-17 18:45:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-17 18:45:50,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:50,723 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:50,737 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 18:45:50,923 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 [2024-09-17 18:45:50,924 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:50,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 737940505, now seen corresponding path program 1 times [2024-09-17 18:45:50,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:50,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296118703] [2024-09-17 18:45:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796428122] [2024-09-17 18:45:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:50,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:50,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:50,948 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) [2024-09-17 18:45:50,952 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:45:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:50,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:45:50,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-17 18:45:51,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:45:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296118703] [2024-09-17 18:45:51,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796428122] [2024-09-17 18:45:51,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796428122] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:51,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:51,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:45:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583214260] [2024-09-17 18:45:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:51,058 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:51,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:45:51,059 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-17 18:45:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:51,106 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-09-17 18:45:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 37 [2024-09-17 18:45:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:51,107 INFO L225 Difference]: With dead ends: 51 [2024-09-17 18:45:51,107 INFO L226 Difference]: Without dead ends: 49 [2024-09-17 18:45:51,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:45:51,109 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:51,110 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:51,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-17 18:45:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-09-17 18:45:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 25 states have internal predecessors, (28), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-17 18:45:51,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-09-17 18:45:51,127 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 37 [2024-09-17 18:45:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:51,127 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-09-17 18:45:51,127 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-17 18:45:51,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-09-17 18:45:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-17 18:45:51,128 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:51,129 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:51,143 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 18:45:51,329 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:51,329 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:51,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1385223068, now seen corresponding path program 1 times [2024-09-17 18:45:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:51,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455421659] [2024-09-17 18:45:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:51,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:51,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655823629] [2024-09-17 18:45:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:51,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:51,368 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) [2024-09-17 18:45:51,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:45:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:45:51,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-17 18:45:51,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:45:51,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:51,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455421659] [2024-09-17 18:45:51,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:51,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655823629] [2024-09-17 18:45:51,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655823629] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:51,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:51,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:45:51,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840414708] [2024-09-17 18:45:51,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:51,457 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:45:51,458 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:45:51,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:51,513 INFO L93 Difference]: Finished difference Result 73 states and 104 transitions. [2024-09-17 18:45:51,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-17 18:45:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:51,517 INFO L225 Difference]: With dead ends: 73 [2024-09-17 18:45:51,517 INFO L226 Difference]: Without dead ends: 69 [2024-09-17 18:45:51,517 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:45:51,518 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:51,518 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 130 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-17 18:45:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-17 18:45:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 32 states have (on average 1.28125) internal successors, (41), 36 states have internal predecessors, (41), 30 states have call successors, (30), 7 states have call predecessors, (30), 6 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:45:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2024-09-17 18:45:51,547 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 42 [2024-09-17 18:45:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:51,548 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2024-09-17 18:45:51,548 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-17 18:45:51,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2024-09-17 18:45:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-17 18:45:51,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:51,549 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:51,561 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 18:45:51,752 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:51,753 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:51,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1071635405, now seen corresponding path program 1 times [2024-09-17 18:45:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:51,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640538303] [2024-09-17 18:45:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:45:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:45:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:45:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:45:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:45:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 18:45:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 18:45:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 18:45:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-17 18:45:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:51,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640538303] [2024-09-17 18:45:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640538303] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:51,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:45:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117735890] [2024-09-17 18:45:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:51,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:45:51,900 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-17 18:45:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:51,942 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2024-09-17 18:45:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 48 [2024-09-17 18:45:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:51,943 INFO L225 Difference]: With dead ends: 75 [2024-09-17 18:45:51,943 INFO L226 Difference]: Without dead ends: 73 [2024-09-17 18:45:51,944 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:45:51,944 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 3 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:51,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-17 18:45:51,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-09-17 18:45:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 30 states have call successors, (30), 8 states have call predecessors, (30), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-17 18:45:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-09-17 18:45:51,956 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 48 [2024-09-17 18:45:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:51,956 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-09-17 18:45:51,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-09-17 18:45:51,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,956 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-09-17 18:45:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-17 18:45:51,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:51,959 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:51,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-17 18:45:51,959 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:51,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1501538128, now seen corresponding path program 1 times [2024-09-17 18:45:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:51,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735889847] [2024-09-17 18:45:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:51,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342801503] [2024-09-17 18:45:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:51,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:51,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:51,989 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) [2024-09-17 18:45:51,989 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:45:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 18:45:52,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-17 18:45:52,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:45:52,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:52,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735889847] [2024-09-17 18:45:52,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:52,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342801503] [2024-09-17 18:45:52,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342801503] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:52,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:45:52,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:45:52,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802454192] [2024-09-17 18:45:52,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:52,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:52,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:52,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:52,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:45:52,108 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:45:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:52,148 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-09-17 18:45:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:52,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-09-17 18:45:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:52,149 INFO L225 Difference]: With dead ends: 83 [2024-09-17 18:45:52,149 INFO L226 Difference]: Without dead ends: 80 [2024-09-17 18:45:52,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:45:52,150 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:52,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:45:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-17 18:45:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-09-17 18:45:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:45:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-09-17 18:45:52,162 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 50 [2024-09-17 18:45:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:52,163 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-09-17 18:45:52,163 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:45:52,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-09-17 18:45:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-17 18:45:52,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:52,165 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:52,178 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:45:52,365 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:52,366 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:52,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:52,366 INFO L85 PathProgramCache]: Analyzing trace with hash 789508930, now seen corresponding path program 1 times [2024-09-17 18:45:52,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607433472] [2024-09-17 18:45:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:45:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:45:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:45:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:45:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:45:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 18:45:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 18:45:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 18:45:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-17 18:45:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-17 18:45:52,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607433472] [2024-09-17 18:45:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607433472] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:45:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104713968] [2024-09-17 18:45:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:52,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:52,645 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) [2024-09-17 18:45:52,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:45:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:52,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 18:45:52,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-09-17 18:45:52,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:45:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104713968] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:45:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:45:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-17 18:45:52,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936450544] [2024-09-17 18:45:52,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:52,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 18:45:52,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 18:45:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-17 18:45:52,776 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-17 18:45:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:52,848 INFO L93 Difference]: Finished difference Result 91 states and 113 transitions. [2024-09-17 18:45:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 18:45:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-09-17 18:45:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:52,850 INFO L225 Difference]: With dead ends: 91 [2024-09-17 18:45:52,850 INFO L226 Difference]: Without dead ends: 87 [2024-09-17 18:45:52,851 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:45:52,851 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:52,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:45:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-09-17 18:45:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-09-17 18:45:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 50 states have internal predecessors, (55), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:45:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2024-09-17 18:45:52,869 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 53 [2024-09-17 18:45:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:52,869 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2024-09-17 18:45:52,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-17 18:45:52,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2024-09-17 18:45:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-17 18:45:52,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:52,872 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:52,885 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 18:45:53,072 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 18:45:53,073 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:53,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1427018501, now seen corresponding path program 2 times [2024-09-17 18:45:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392642996] [2024-09-17 18:45:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:53,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539754785] [2024-09-17 18:45:53,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:45:53,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:53,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:53,092 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) [2024-09-17 18:45:53,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:45:53,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:45:53,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:45:53,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 18:45:53,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-17 18:45:53,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:45:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-17 18:45:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392642996] [2024-09-17 18:45:53,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539754785] [2024-09-17 18:45:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539754785] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:45:53,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:45:53,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-09-17 18:45:53,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30704463] [2024-09-17 18:45:53,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:45:53,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-17 18:45:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-17 18:45:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:45:53,718 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-17 18:45:57,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:45:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:57,926 INFO L93 Difference]: Finished difference Result 128 states and 166 transitions. [2024-09-17 18:45:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 18:45:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2024-09-17 18:45:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:57,927 INFO L225 Difference]: With dead ends: 128 [2024-09-17 18:45:57,927 INFO L226 Difference]: Without dead ends: 126 [2024-09-17 18:45:57,928 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2024-09-17 18:45:57,928 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:57,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 252 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-09-17 18:45:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-17 18:45:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 94. [2024-09-17 18:45:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.150943396226415) internal successors, (61), 56 states have internal predecessors, (61), 27 states have call successors, (27), 14 states have call predecessors, (27), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 18:45:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2024-09-17 18:45:57,950 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 55 [2024-09-17 18:45:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:57,950 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2024-09-17 18:45:57,950 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-17 18:45:57,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2024-09-17 18:45:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-17 18:45:57,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:57,951 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:57,964 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 18:45:58,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:58,156 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:58,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1563984878, now seen corresponding path program 1 times [2024-09-17 18:45:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:58,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380130673] [2024-09-17 18:45:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:58,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512580397] [2024-09-17 18:45:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:58,168 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) [2024-09-17 18:45:58,169 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:45:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:58,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-17 18:45:58,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 21 proven. 17 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 18:45:58,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:45:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-17 18:45:58,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380130673] [2024-09-17 18:45:58,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:58,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512580397] [2024-09-17 18:45:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512580397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:45:58,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:45:58,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-09-17 18:45:58,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400738644] [2024-09-17 18:45:58,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:45:58,768 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 18:45:58,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:58,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 18:45:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:45:58,768 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-17 18:45:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:59,268 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2024-09-17 18:45:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 18:45:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 60 [2024-09-17 18:45:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:59,270 INFO L225 Difference]: With dead ends: 129 [2024-09-17 18:45:59,270 INFO L226 Difference]: Without dead ends: 111 [2024-09-17 18:45:59,270 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-17 18:45:59,271 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:59,271 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 242 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:45:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-09-17 18:45:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2024-09-17 18:45:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 55 states have internal predecessors, (60), 23 states have call successors, (23), 14 states have call predecessors, (23), 13 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-17 18:45:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2024-09-17 18:45:59,300 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 60 [2024-09-17 18:45:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:59,300 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2024-09-17 18:45:59,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 15 states have internal predecessors, (32), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-17 18:45:59,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2024-09-17 18:45:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-17 18:45:59,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:59,301 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:59,315 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 18:45:59,506 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:59,507 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:45:59,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:59,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1657370914, now seen corresponding path program 1 times [2024-09-17 18:45:59,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:45:59,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892272959] [2024-09-17 18:45:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:59,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:45:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:45:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581552794] [2024-09-17 18:45:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:45:59,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:45:59,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:45:59,525 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) [2024-09-17 18:45:59,526 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 18:45:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:45:59,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-17 18:45:59,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:45:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-17 18:45:59,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:45:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-09-17 18:45:59,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:45:59,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892272959] [2024-09-17 18:45:59,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:45:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581552794] [2024-09-17 18:45:59,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581552794] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 18:45:59,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 18:45:59,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-09-17 18:45:59,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898401650] [2024-09-17 18:45:59,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:45:59,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:45:59,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:45:59,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:45:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-17 18:45:59,750 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:45:59,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:45:59,866 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2024-09-17 18:45:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:45:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-09-17 18:45:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:45:59,867 INFO L225 Difference]: With dead ends: 96 [2024-09-17 18:45:59,867 INFO L226 Difference]: Without dead ends: 91 [2024-09-17 18:45:59,867 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-17 18:45:59,868 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:45:59,868 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:45:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-17 18:45:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-17 18:45:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 20 states have call successors, (20), 15 states have call predecessors, (20), 13 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:45:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2024-09-17 18:45:59,895 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 68 [2024-09-17 18:45:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:45:59,896 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2024-09-17 18:45:59,896 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 18:45:59,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:45:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2024-09-17 18:45:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-17 18:45:59,897 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:45:59,897 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:45:59,910 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 18:46:00,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:46:00,102 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:46:00,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:46:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -335668690, now seen corresponding path program 1 times [2024-09-17 18:46:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:46:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604575116] [2024-09-17 18:46:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:46:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:46:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:46:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 18:46:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 18:46:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-17 18:46:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-17 18:46:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 18:46:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-17 18:46:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-17 18:46:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 18:46:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 18:46:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 18:46:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-17 18:46:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-17 18:46:00,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:46:00,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604575116] [2024-09-17 18:46:00,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604575116] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 18:46:00,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359333015] [2024-09-17 18:46:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:46:00,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:46:00,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:46:00,277 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) [2024-09-17 18:46:00,279 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 18:46:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:46:00,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-17 18:46:00,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:46:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-17 18:46:00,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:46:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-09-17 18:46:00,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359333015] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:46:00,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 18:46:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-17 18:46:00,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737490808] [2024-09-17 18:46:00,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 18:46:00,422 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-17 18:46:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:46:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-17 18:46:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-17 18:46:00,422 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-17 18:46:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:46:00,543 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2024-09-17 18:46:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 18:46:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 71 [2024-09-17 18:46:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:46:00,545 INFO L225 Difference]: With dead ends: 96 [2024-09-17 18:46:00,545 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:46:00,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:46:00,546 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:46:00,546 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 202 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:46:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:46:00,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:46:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 18:46:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:46:00,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-09-17 18:46:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:46:00,547 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:46:00,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-17 18:46:00,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:46:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:46:00,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:46:00,549 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:46:00,561 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-17 18:46:00,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-17 18:46:00,753 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:46:00,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:46:12,690 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 76 DAG size of output: 36 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-17 18:46:14,239 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 18:46:14,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 06:46:14 BoogieIcfgContainer [2024-09-17 18:46:14,253 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 18:46:14,253 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 18:46:14,253 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 18:46:14,253 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 18:46:14,254 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:45:50" (3/4) ... [2024-09-17 18:46:14,255 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 18:46:14,295 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 18:46:14,295 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 18:46:14,296 INFO L158 Benchmark]: Toolchain (without parser) took 24785.95ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 98.4MB in the beginning and 141.6MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:46:14,296 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:46:14,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.54ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 86.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 18:46:14,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.87ms. Allocated memory is still 167.8MB. Free memory was 86.5MB in the beginning and 85.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:46:14,296 INFO L158 Benchmark]: Boogie Preprocessor took 54.17ms. Allocated memory is still 167.8MB. Free memory was 85.4MB in the beginning and 83.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:46:14,296 INFO L158 Benchmark]: RCFGBuilder took 269.49ms. Allocated memory is still 167.8MB. Free memory was 83.7MB in the beginning and 69.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 18:46:14,297 INFO L158 Benchmark]: TraceAbstraction took 24197.04ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 143.6MB in the end (delta: -74.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2024-09-17 18:46:14,297 INFO L158 Benchmark]: Witness Printer took 42.14ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:46:14,298 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.54ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 86.5MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.87ms. Allocated memory is still 167.8MB. Free memory was 86.5MB in the beginning and 85.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.17ms. Allocated memory is still 167.8MB. Free memory was 85.4MB in the beginning and 83.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.49ms. Allocated memory is still 167.8MB. Free memory was 83.7MB in the beginning and 69.8MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24197.04ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 143.6MB in the end (delta: -74.6MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * Witness Printer took 42.14ms. Allocated memory is still 201.3MB. Free memory was 143.6MB in the beginning and 141.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.6s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 1675 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1304 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 997 IncrementalHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 371 mSDtfsCounter, 997 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 734 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1016 NumberOfCodeBlocks, 1016 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 909 ConstructedInterpolants, 0 QuantifiedInterpolants, 2752 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1156 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 1091/1171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((b == (((__int128) q * x) + ((__int128) y * s))) && (1 <= x)) && (a == (((__int128) y * r) + ((__int128) p * x)))) && (1 <= y)) && (((__int128) p * s) == (((__int128) q * r) + 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-17 18:46:14,313 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE