./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/cohencu-ll_valuebound10.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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:37:09,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:37:09,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:37:09,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:37:09,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:37:09,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:37:09,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:37:09,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:37:09,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:37:09,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:37:09,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:37:09,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:37:09,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:37:09,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:37:09,951 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:37:09,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:37:09,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:37:09,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:37:09,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:37:09,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:37:09,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:37:09,954 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:37:09,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:37:09,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:37:09,955 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:37:09,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:37:09,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:37:09,956 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:37:09,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:37:09,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:37:09,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:37:09,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:37:09,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:37:09,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:37:09,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:37:09,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:37:09,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:37:09,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:37:09,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:37:09,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:37:09,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:37:09,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:37:09,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:37:10,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:37:10,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:37:10,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:37:10,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:37:10,255 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:37:10,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-10-15 14:37:11,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:37:11,878 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:37:11,878 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-10-15 14:37:11,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/eb08a6e50/f55f7797b8d441a4a897120f6e04b67f/FLAGbbf8dabaa [2024-10-15 14:37:12,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/eb08a6e50/f55f7797b8d441a4a897120f6e04b67f [2024-10-15 14:37:12,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:37:12,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:37:12,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:37:12,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:37:12,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:37:12,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dfc346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12, skipping insertion in model container [2024-10-15 14:37:12,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:37:12,484 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/cohencu-ll_valuebound10.c[588,601] [2024-10-15 14:37:12,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:37:12,517 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:37:12,526 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/cohencu-ll_valuebound10.c[588,601] [2024-10-15 14:37:12,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:37:12,551 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:37:12,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12 WrapperNode [2024-10-15 14:37:12,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:37:12,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:37:12,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:37:12,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:37:12,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,568 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:37:12,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:37:12,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:37:12,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:37:12,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:37:12,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,595 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]. [2024-10-15 14:37:12,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:37:12,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:37:12,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:37:12,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:37:12,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (1/1) ... [2024-10-15 14:37:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:37:12,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:12,639 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) [2024-10-15 14:37:12,645 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 [2024-10-15 14:37:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:37:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-15 14:37:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-15 14:37:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:37:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:37:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:37:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:37:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:37:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:37:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:37:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:37:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:37:12,760 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:37:12,762 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:37:12,995 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-15 14:37:12,996 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:37:13,021 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:37:13,021 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:37:13,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:37:13 BoogieIcfgContainer [2024-10-15 14:37:13,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:37:13,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:37:13,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:37:13,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:37:13,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:37:12" (1/3) ... [2024-10-15 14:37:13,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43448d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:37:13, skipping insertion in model container [2024-10-15 14:37:13,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:37:12" (2/3) ... [2024-10-15 14:37:13,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d43448d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:37:13, skipping insertion in model container [2024-10-15 14:37:13,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:37:13" (3/3) ... [2024-10-15 14:37:13,033 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2024-10-15 14:37:13,066 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:37:13,067 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:37:13,125 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:37:13,133 INFO L333 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;@2530015f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:37:13,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:37:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:37:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-15 14:37:13,146 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:13,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:13,147 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:13,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1802650881, now seen corresponding path program 1 times [2024-10-15 14:37:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800405337] [2024-10-15 14:37:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:37:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:37:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:37:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800405337] [2024-10-15 14:37:13,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800405337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:37:13,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:37:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 14:37:13,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071455039] [2024-10-15 14:37:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:37:13,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 14:37:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:13,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 14:37:13,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:37:13,349 INFO L87 Difference]: Start difference. First operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 14:37:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:13,394 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2024-10-15 14:37:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 14:37:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-10-15 14:37:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:13,404 INFO L225 Difference]: With dead ends: 60 [2024-10-15 14:37:13,405 INFO L226 Difference]: Without dead ends: 30 [2024-10-15 14:37:13,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:37:13,413 INFO L432 NwaCegarLoop]: 42 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, 42 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 [2024-10-15 14:37:13,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:37:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-15 14:37:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-15 14:37:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:37:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-10-15 14:37:13,453 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2024-10-15 14:37:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:13,454 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-10-15 14:37:13,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 14:37:13,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-10-15 14:37:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-15 14:37:13,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:13,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:13,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:37:13,456 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:13,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1133972673, now seen corresponding path program 1 times [2024-10-15 14:37:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3003963] [2024-10-15 14:37:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:37:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 14:37:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:37:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3003963] [2024-10-15 14:37:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3003963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:37:13,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:37:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:37:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689283723] [2024-10-15 14:37:13,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:37:13,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:37:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:37:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:37:13,740 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 14:37:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:13,862 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-10-15 14:37:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:37:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-10-15 14:37:13,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:13,864 INFO L225 Difference]: With dead ends: 36 [2024-10-15 14:37:13,864 INFO L226 Difference]: Without dead ends: 34 [2024-10-15 14:37:13,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:37:13,866 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:13,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:37:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-15 14:37:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-15 14:37:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:37:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-10-15 14:37:13,879 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 16 [2024-10-15 14:37:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:13,880 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-10-15 14:37:13,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-15 14:37:13,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-10-15 14:37:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 14:37:13,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:13,882 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:13,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:37:13,882 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:13,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -295453008, now seen corresponding path program 1 times [2024-10-15 14:37:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:13,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344345498] [2024-10-15 14:37:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465936172] [2024-10-15 14:37:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:13,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:13,912 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) [2024-10-15 14:37:13,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:37:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:13,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:37:13,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:37:14,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:37:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:14,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344345498] [2024-10-15 14:37:14,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465936172] [2024-10-15 14:37:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465936172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:37:14,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:37:14,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:37:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071230397] [2024-10-15 14:37:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:37:14,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:37:14,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:37:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:37:14,063 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 14:37:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:14,160 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2024-10-15 14:37:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:37:14,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-10-15 14:37:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:14,163 INFO L225 Difference]: With dead ends: 53 [2024-10-15 14:37:14,164 INFO L226 Difference]: Without dead ends: 51 [2024-10-15 14:37:14,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:37:14,167 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:14,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:37:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-15 14:37:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2024-10-15 14:37:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:37:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-10-15 14:37:14,193 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 21 [2024-10-15 14:37:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:14,193 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-10-15 14:37:14,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 14:37:14,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-10-15 14:37:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 14:37:14,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:14,196 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:14,214 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:37:14,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:14,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:14,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 291539359, now seen corresponding path program 1 times [2024-10-15 14:37:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:14,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202898364] [2024-10-15 14:37:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:14,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742447433] [2024-10-15 14:37:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:14,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:14,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:14,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:37:14,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:37:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:14,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:37:14,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:37:14,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:37:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202898364] [2024-10-15 14:37:14,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742447433] [2024-10-15 14:37:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742447433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:37:14,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:37:14,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:37:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673669135] [2024-10-15 14:37:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:37:14,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:37:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:37:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:37:14,548 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 14:37:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:14,647 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-10-15 14:37:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:37:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-10-15 14:37:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:14,649 INFO L225 Difference]: With dead ends: 57 [2024-10-15 14:37:14,649 INFO L226 Difference]: Without dead ends: 55 [2024-10-15 14:37:14,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:37:14,651 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:14,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:37:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-15 14:37:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-10-15 14:37:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:37:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-10-15 14:37:14,676 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 26 [2024-10-15 14:37:14,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:14,676 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-10-15 14:37:14,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 14:37:14,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-10-15 14:37:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-15 14:37:14,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:14,678 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:14,691 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 14:37:14,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:14,880 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:14,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1228581936, now seen corresponding path program 1 times [2024-10-15 14:37:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:14,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822622593] [2024-10-15 14:37:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527616414] [2024-10-15 14:37:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:14,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:14,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:14,925 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) [2024-10-15 14:37:14,927 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:37:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:14,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 14:37:14,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:37:15,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:37:15,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822622593] [2024-10-15 14:37:15,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:15,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527616414] [2024-10-15 14:37:15,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527616414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:37:15,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:37:15,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:37:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614731877] [2024-10-15 14:37:15,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:37:15,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:37:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:15,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:37:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:37:15,087 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 14:37:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:15,180 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-10-15 14:37:15,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:37:15,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-10-15 14:37:15,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:15,182 INFO L225 Difference]: With dead ends: 65 [2024-10-15 14:37:15,182 INFO L226 Difference]: Without dead ends: 53 [2024-10-15 14:37:15,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-15 14:37:15,184 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:15,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:37:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-15 14:37:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-15 14:37:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:37:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-10-15 14:37:15,209 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2024-10-15 14:37:15,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:15,209 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-10-15 14:37:15,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 14:37:15,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-10-15 14:37:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-15 14:37:15,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:15,213 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:15,229 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 14:37:15,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:15,414 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:15,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:15,414 INFO L85 PathProgramCache]: Analyzing trace with hash 149987423, now seen corresponding path program 1 times [2024-10-15 14:37:15,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:15,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283452561] [2024-10-15 14:37:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:15,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:15,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406920317] [2024-10-15 14:37:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:15,465 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) [2024-10-15 14:37:15,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:37:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:15,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-15 14:37:15,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 14:37:15,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 14:37:15,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283452561] [2024-10-15 14:37:15,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406920317] [2024-10-15 14:37:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406920317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:15,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:15,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-10-15 14:37:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410647610] [2024-10-15 14:37:15,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:15,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:37:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:37:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:37:15,915 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-10-15 14:37:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:16,183 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-10-15 14:37:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:37:16,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 48 [2024-10-15 14:37:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:16,186 INFO L225 Difference]: With dead ends: 76 [2024-10-15 14:37:16,186 INFO L226 Difference]: Without dead ends: 74 [2024-10-15 14:37:16,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:37:16,187 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:16,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 133 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:37:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-15 14:37:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2024-10-15 14:37:16,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:37:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-10-15 14:37:16,235 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 48 [2024-10-15 14:37:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:16,238 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-10-15 14:37:16,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-10-15 14:37:16,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-10-15 14:37:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-15 14:37:16,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:16,239 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-10-15 14:37:16,258 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 14:37:16,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:16,440 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:16,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash -883401392, now seen corresponding path program 2 times [2024-10-15 14:37:16,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:16,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101969900] [2024-10-15 14:37:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:16,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004735636] [2024-10-15 14:37:16,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:37:16,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:16,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:16,483 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) [2024-10-15 14:37:16,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:37:16,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:37:16,532 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:37:16,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 14:37:16,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-15 14:37:16,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-15 14:37:16,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:16,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101969900] [2024-10-15 14:37:16,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:16,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004735636] [2024-10-15 14:37:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004735636] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:16,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:16,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-10-15 14:37:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350406965] [2024-10-15 14:37:16,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:16,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:37:16,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:37:16,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:37:16,896 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-10-15 14:37:17,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:17,234 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2024-10-15 14:37:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 14:37:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 53 [2024-10-15 14:37:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:17,237 INFO L225 Difference]: With dead ends: 90 [2024-10-15 14:37:17,240 INFO L226 Difference]: Without dead ends: 85 [2024-10-15 14:37:17,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:37:17,241 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:17,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:37:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-15 14:37:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-15 14:37:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:37:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-10-15 14:37:17,273 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 53 [2024-10-15 14:37:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:17,273 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-10-15 14:37:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-10-15 14:37:17,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-10-15 14:37:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-15 14:37:17,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:17,280 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:17,297 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:37:17,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:37:17,485 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:17,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -612037408, now seen corresponding path program 1 times [2024-10-15 14:37:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:17,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604199307] [2024-10-15 14:37:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018997359] [2024-10-15 14:37:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:17,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:17,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:17,521 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) [2024-10-15 14:37:17,522 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:37:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:17,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:37:17,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:37:17,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:37:18,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604199307] [2024-10-15 14:37:18,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:18,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018997359] [2024-10-15 14:37:18,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018997359] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:18,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:18,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-15 14:37:18,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582751797] [2024-10-15 14:37:18,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:18,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:37:18,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:37:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:37:18,168 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-10-15 14:37:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:18,389 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-10-15 14:37:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:37:18,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 74 [2024-10-15 14:37:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:18,391 INFO L225 Difference]: With dead ends: 110 [2024-10-15 14:37:18,391 INFO L226 Difference]: Without dead ends: 108 [2024-10-15 14:37:18,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:37:18,392 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:18,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:37:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-15 14:37:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-10-15 14:37:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 57 states have internal predecessors, (58), 34 states have call successors, (34), 16 states have call predecessors, (34), 15 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:37:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2024-10-15 14:37:18,424 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 74 [2024-10-15 14:37:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:18,425 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-10-15 14:37:18,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-10-15 14:37:18,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2024-10-15 14:37:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-15 14:37:18,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:18,426 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:18,443 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 14:37:18,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:18,631 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:18,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1655042001, now seen corresponding path program 1 times [2024-10-15 14:37:18,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8859994] [2024-10-15 14:37:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:18,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:18,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518265545] [2024-10-15 14:37:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:18,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:18,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:18,655 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) [2024-10-15 14:37:18,657 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:37:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:18,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 14:37:18,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:37:18,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:37:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8859994] [2024-10-15 14:37:19,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518265545] [2024-10-15 14:37:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518265545] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:19,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2024-10-15 14:37:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602183695] [2024-10-15 14:37:19,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:19,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:37:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:37:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:37:19,241 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-10-15 14:37:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:19,634 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-10-15 14:37:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:37:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 79 [2024-10-15 14:37:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:19,637 INFO L225 Difference]: With dead ends: 122 [2024-10-15 14:37:19,637 INFO L226 Difference]: Without dead ends: 113 [2024-10-15 14:37:19,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:37:19,638 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:19,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 336 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:37:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-10-15 14:37:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-10-15 14:37:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:37:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-10-15 14:37:19,668 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 79 [2024-10-15 14:37:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:19,669 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-10-15 14:37:19,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-10-15 14:37:19,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-10-15 14:37:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-15 14:37:19,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:19,671 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:19,687 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 14:37:19,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:19,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:19,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -875039120, now seen corresponding path program 3 times [2024-10-15 14:37:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712701375] [2024-10-15 14:37:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:19,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595199781] [2024-10-15 14:37:19,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:37:19,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:19,916 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) [2024-10-15 14:37:19,924 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:37:20,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-15 14:37:20,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:37:20,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-15 14:37:20,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-10-15 14:37:20,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-10-15 14:37:20,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712701375] [2024-10-15 14:37:20,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:20,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595199781] [2024-10-15 14:37:20,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595199781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:20,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:20,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-10-15 14:37:20,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130729919] [2024-10-15 14:37:20,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:20,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 14:37:20,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 14:37:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:37:20,723 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-10-15 14:37:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:21,594 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-10-15 14:37:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:37:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 85 [2024-10-15 14:37:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:21,596 INFO L225 Difference]: With dead ends: 133 [2024-10-15 14:37:21,596 INFO L226 Difference]: Without dead ends: 115 [2024-10-15 14:37:21,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:37:21,597 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:21,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:37:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-15 14:37:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-15 14:37:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 27 states have call successors, (27), 20 states have call predecessors, (27), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:37:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2024-10-15 14:37:21,626 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 85 [2024-10-15 14:37:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:21,626 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2024-10-15 14:37:21,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-10-15 14:37:21,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2024-10-15 14:37:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-15 14:37:21,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:21,628 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:21,635 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 14:37:21,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:21,829 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:21,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2107835968, now seen corresponding path program 2 times [2024-10-15 14:37:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533967774] [2024-10-15 14:37:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:21,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636067973] [2024-10-15 14:37:21,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:37:21,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:21,865 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) [2024-10-15 14:37:21,866 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:37:21,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:37:21,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:37:21,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-15 14:37:21,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-10-15 14:37:22,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-10-15 14:37:23,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:23,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533967774] [2024-10-15 14:37:23,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:23,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636067973] [2024-10-15 14:37:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636067973] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:23,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:23,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-10-15 14:37:23,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096054939] [2024-10-15 14:37:23,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:23,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:37:23,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:23,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:37:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:37:23,145 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-10-15 14:37:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:23,756 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-10-15 14:37:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 14:37:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 128 [2024-10-15 14:37:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:23,758 INFO L225 Difference]: With dead ends: 136 [2024-10-15 14:37:23,758 INFO L226 Difference]: Without dead ends: 134 [2024-10-15 14:37:23,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:37:23,759 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:23,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 299 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:37:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-15 14:37:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2024-10-15 14:37:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:37:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-10-15 14:37:23,789 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 128 [2024-10-15 14:37:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:23,790 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-10-15 14:37:23,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-10-15 14:37:23,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-10-15 14:37:23,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-15 14:37:23,792 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:23,792 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:23,810 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 14:37:23,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:37:23,997 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:23,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1340142287, now seen corresponding path program 2 times [2024-10-15 14:37:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:23,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377000280] [2024-10-15 14:37:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:23,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:24,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18289478] [2024-10-15 14:37:24,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:37:24,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:24,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:24,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:37:24,050 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 14:37:24,123 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:37:24,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:37:24,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-15 14:37:24,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-10-15 14:37:24,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-10-15 14:37:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377000280] [2024-10-15 14:37:25,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18289478] [2024-10-15 14:37:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18289478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:25,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:25,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-10-15 14:37:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947754567] [2024-10-15 14:37:25,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:25,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 14:37:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 14:37:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:37:25,313 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-10-15 14:37:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:26,111 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-10-15 14:37:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 14:37:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) Word has length 133 [2024-10-15 14:37:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:26,113 INFO L225 Difference]: With dead ends: 149 [2024-10-15 14:37:26,113 INFO L226 Difference]: Without dead ends: 145 [2024-10-15 14:37:26,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:37:26,114 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:26,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 464 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:37:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-15 14:37:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2024-10-15 14:37:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 27 states have call successors, (27), 22 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:37:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2024-10-15 14:37:26,161 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 133 [2024-10-15 14:37:26,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:26,162 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2024-10-15 14:37:26,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-10-15 14:37:26,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:26,162 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2024-10-15 14:37:26,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-15 14:37:26,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:37:26,163 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:26,176 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 14:37:26,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 14:37:26,364 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:37:26,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:26,364 INFO L85 PathProgramCache]: Analyzing trace with hash 127442784, now seen corresponding path program 1 times [2024-10-15 14:37:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:37:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046220907] [2024-10-15 14:37:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:37:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-15 14:37:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271948883] [2024-10-15 14:37:26,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:37:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:37:26,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:37:26,413 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 14:37:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:37:26,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-15 14:37:26,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:37:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-15 14:37:26,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:37:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-10-15 14:37:27,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:37:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046220907] [2024-10-15 14:37:27,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-15 14:37:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271948883] [2024-10-15 14:37:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271948883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:37:27,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:37:27,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-10-15 14:37:27,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650277307] [2024-10-15 14:37:27,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-15 14:37:27,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:37:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:37:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:37:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:37:27,874 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-10-15 14:37:32,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-15 14:37:37,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-15 14:37:37,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:37:37,039 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-10-15 14:37:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:37:37,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) Word has length 138 [2024-10-15 14:37:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:37:37,040 INFO L225 Difference]: With dead ends: 134 [2024-10-15 14:37:37,040 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:37:37,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:37:37,042 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:37:37,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 348 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-10-15 14:37:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:37:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:37:37,043 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) [2024-10-15 14:37:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:37:37,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2024-10-15 14:37:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:37:37,043 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:37:37,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-10-15 14:37:37,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:37:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:37:37,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:37:37,046 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:37:37,064 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 14:37:37,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:37:37,253 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 14:37:37,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:37:58,437 WARN L286 SmtUtils]: Spent 20.12s on a formula simplification. DAG size of input: 192 DAG size of output: 62 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:38:21,334 WARN L286 SmtUtils]: Spent 22.89s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:38:43,241 WARN L286 SmtUtils]: Spent 21.89s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:39:06,452 WARN L286 SmtUtils]: Spent 23.19s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:39:17,797 WARN L286 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 176 DAG size of output: 43 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:39:27,179 WARN L286 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:39:48,898 WARN L286 SmtUtils]: Spent 21.72s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:40:12,026 WARN L286 SmtUtils]: Spent 23.00s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:40:29,774 WARN L286 SmtUtils]: Spent 17.75s on a formula simplification. DAG size of input: 177 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:40:47,497 WARN L286 SmtUtils]: Spent 17.70s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:40:56,333 WARN L286 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-15 14:40:56,342 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:40:56,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:40:56 BoogieIcfgContainer [2024-10-15 14:40:56,364 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 14:40:56,364 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 14:40:56,364 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 14:40:56,365 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 14:40:56,365 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:37:13" (3/4) ... [2024-10-15 14:40:56,367 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 14:40:56,415 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 14:40:56,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 14:40:56,416 INFO L158 Benchmark]: Toolchain (without parser) took 224131.66ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 94.0MB in the beginning and 166.4MB in the end (delta: -72.4MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,416 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:40:56,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.99ms. Allocated memory is still 148.9MB. Free memory was 94.0MB in the beginning and 81.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.50ms. Allocated memory is still 148.9MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,417 INFO L158 Benchmark]: Boogie Preprocessor took 36.28ms. Allocated memory is still 148.9MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,417 INFO L158 Benchmark]: RCFGBuilder took 415.19ms. Allocated memory is still 148.9MB. Free memory was 78.3MB in the beginning and 118.3MB in the end (delta: -40.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,417 INFO L158 Benchmark]: TraceAbstraction took 223339.47ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 117.6MB in the beginning and 169.5MB in the end (delta: -51.9MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,417 INFO L158 Benchmark]: Witness Printer took 50.97ms. Allocated memory is still 230.7MB. Free memory was 169.5MB in the beginning and 166.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 14:40:56,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 148.9MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.99ms. Allocated memory is still 148.9MB. Free memory was 94.0MB in the beginning and 81.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.50ms. Allocated memory is still 148.9MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.28ms. Allocated memory is still 148.9MB. Free memory was 80.0MB in the beginning and 78.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.19ms. Allocated memory is still 148.9MB. Free memory was 78.3MB in the beginning and 118.3MB in the end (delta: -40.0MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * TraceAbstraction took 223339.47ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 117.6MB in the beginning and 169.5MB in the end (delta: -51.9MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. * Witness Printer took 50.97ms. Allocated memory is still 230.7MB. Free memory was 169.5MB in the beginning and 166.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 17]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.1s, OverallIterations: 13, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 2817 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2343 mSDsCounter, 374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2136 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 374 mSolverCounterUnsat, 474 mSDtfsCounter, 2136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1438 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 1664 NumberOfCodeBlocks, 1624 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1565 ConstructedInterpolants, 0 QuantifiedInterpolants, 7574 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1799 ConjunctsInSsa, 272 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 7706/8248 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: 33]: Loop Invariant Derived loop invariant: ((((((((((((__int128) 7 * z) + ((__int128) y * 46)) + (((__int128) z * x) * 3)) + ((__int128) x * 36)) == ((((2 * ((__int128) y * y)) + (((__int128) z * z) * 2)) + 8) + ((__int128) z * y))) && ((((((__int128) x * 18) + (((__int128) z * x) * 3)) + ((__int128) y * 10)) + 10) == ((2 * ((__int128) y * y)) + ((__int128) z * 3)))) && ((((__int128) n * 6) + 6) == z)) && (0 <= a)) && (((((2 * ((__int128) y * y)) + (((__int128) z * z) * 5)) + 38) + (2 * ((__int128) z * y))) == (((((__int128) 23 * z) + (((__int128) z * x) * 3)) + ((__int128) x * 54)) + ((__int128) 94 * y)))) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) && (a <= 10)) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-15 14:40:56,445 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE