./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.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 d205b4d392fcf6603d2c7a58c20f30b20ad63dac227f46def37edd46d8cc7990 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 23:33:23,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 23:33:23,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 23:33:23,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 23:33:23,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 23:33:23,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 23:33:23,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 23:33:23,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 23:33:23,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 23:33:23,822 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 23:33:23,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 23:33:23,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 23:33:23,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 23:33:23,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 23:33:23,824 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 23:33:23,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 23:33:23,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 23:33:23,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 23:33:23,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 23:33:23,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 23:33:23,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 23:33:23,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 23:33:23,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 23:33:23,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 23:33:23,831 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 23:33:23,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 23:33:23,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 23:33:23,832 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 23:33:23,832 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 23:33:23,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 23:33:23,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 23:33:23,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 23:33:23,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 23:33:23,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 23:33:23,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 23:33:23,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 23:33:23,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 23:33:23,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 23:33:23,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 23:33:23,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 23:33:23,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 23:33:23,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 23:33:23,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d205b4d392fcf6603d2c7a58c20f30b20ad63dac227f46def37edd46d8cc7990 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 23:33:24,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 23:33:24,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 23:33:24,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 23:33:24,136 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 23:33:24,136 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 23:33:24,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2024-09-12 23:33:25,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 23:33:25,740 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 23:33:25,741 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2024-09-12 23:33:25,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c35b38fa4/1b7c1e246a734745836f457502ee0562/FLAG2d1de6115 [2024-09-12 23:33:26,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c35b38fa4/1b7c1e246a734745836f457502ee0562 [2024-09-12 23:33:26,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 23:33:26,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 23:33:26,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 23:33:26,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 23:33:26,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 23:33:26,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7239333c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26, skipping insertion in model container [2024-09-12 23:33:26,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 23:33:26,305 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538] [2024-09-12 23:33:26,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 23:33:26,347 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 23:33:26,360 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c[525,538] [2024-09-12 23:33:26,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 23:33:26,414 INFO L204 MainTranslator]: Completed translation [2024-09-12 23:33:26,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26 WrapperNode [2024-09-12 23:33:26,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 23:33:26,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 23:33:26,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 23:33:26,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 23:33:26,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,437 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 23:33:26,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 23:33:26,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 23:33:26,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 23:33:26,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 23:33:26,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,465 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 23:33:26,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,475 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 23:33:26,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 23:33:26,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 23:33:26,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 23:33:26,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (1/1) ... [2024-09-12 23:33:26,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 23:33:26,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:33:26,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-12 23:33:26,521 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-12 23:33:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 23:33:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 23:33:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 23:33:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 23:33:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 23:33:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 23:33:26,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 23:33:26,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 23:33:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 23:33:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 23:33:26,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 23:33:26,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 23:33:26,629 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 23:33:26,632 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 23:33:26,946 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-12 23:33:26,947 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 23:33:26,973 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 23:33:26,973 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 23:33:26,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 11:33:26 BoogieIcfgContainer [2024-09-12 23:33:26,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 23:33:26,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 23:33:26,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 23:33:26,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 23:33:26,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 11:33:26" (1/3) ... [2024-09-12 23:33:26,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5cb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 11:33:26, skipping insertion in model container [2024-09-12 23:33:26,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 11:33:26" (2/3) ... [2024-09-12 23:33:26,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5cb2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 11:33:26, skipping insertion in model container [2024-09-12 23:33:26,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 11:33:26" (3/3) ... [2024-09-12 23:33:26,986 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c [2024-09-12 23:33:27,004 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 23:33:27,004 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 23:33:27,071 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 23:33:27,080 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b8bd857, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 23:33:27,080 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 23:33:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 23:33:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-12 23:33:27,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:33:27,094 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:33:27,095 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:33:27,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2032653734, now seen corresponding path program 1 times [2024-09-12 23:33:27,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:33:27,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231993649] [2024-09-12 23:33:27,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:27,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:33:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:33:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:33:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:33:27,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:33:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231993649] [2024-09-12 23:33:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231993649] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:33:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:33:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 23:33:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478754833] [2024-09-12 23:33:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:33:27,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 23:33:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:33:27,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 23:33:27,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 23:33:27,325 INFO L87 Difference]: Start difference. First operand has 37 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:33:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:33:27,505 INFO L93 Difference]: Finished difference Result 67 states and 108 transitions. [2024-09-12 23:33:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 23:33:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 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 17 [2024-09-12 23:33:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:33:27,517 INFO L225 Difference]: With dead ends: 67 [2024-09-12 23:33:27,517 INFO L226 Difference]: Without dead ends: 34 [2024-09-12 23:33:27,521 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 23:33:27,527 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 23:33:27,528 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 23:33:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-12 23:33:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-12 23:33:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 23:33:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-09-12 23:33:27,580 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 17 [2024-09-12 23:33:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:33:27,581 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-09-12 23:33:27,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 23:33:27,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-09-12 23:33:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 23:33:27,583 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:33:27,584 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:33:27,584 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 23:33:27,585 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:33:27,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1118840531, now seen corresponding path program 1 times [2024-09-12 23:33:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:33:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977098668] [2024-09-12 23:33:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:33:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:33:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:33:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:33:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:33:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977098668] [2024-09-12 23:33:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977098668] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:33:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:33:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 23:33:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497358866] [2024-09-12 23:33:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:33:27,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 23:33:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:33:27,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 23:33:27,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 23:33:27,825 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 23:33:31,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:33:35,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:33:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:33:36,000 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2024-09-12 23:33:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 23:33:36,000 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), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-12 23:33:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:33:36,002 INFO L225 Difference]: With dead ends: 54 [2024-09-12 23:33:36,002 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 23:33:36,003 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 23:33:36,004 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-09-12 23:33:36,004 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 85 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-09-12 23:33:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 23:33:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-12 23:33:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 23:33:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2024-09-12 23:33:36,016 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 19 [2024-09-12 23:33:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:33:36,016 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2024-09-12 23:33:36,017 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 23:33:36,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2024-09-12 23:33:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 23:33:36,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:33:36,018 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:33:36,019 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 23:33:36,019 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:33:36,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:36,020 INFO L85 PathProgramCache]: Analyzing trace with hash -668930339, now seen corresponding path program 1 times [2024-09-12 23:33:36,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:33:36,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775422358] [2024-09-12 23:33:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:36,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:33:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:33:36,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195945109] [2024-09-12 23:33:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:36,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:33:36,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:33:36,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:33:36,062 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 23:33:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:36,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 23:33:36,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:33:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:33:36,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 23:33:36,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:33:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775422358] [2024-09-12 23:33:36,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:33:36,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195945109] [2024-09-12 23:33:36,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195945109] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:33:36,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:33:36,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 23:33:36,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036921469] [2024-09-12 23:33:36,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:33:36,237 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 23:33:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:33:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 23:33:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 23:33:36,239 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-12 23:33:40,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:33:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:33:40,419 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2024-09-12 23:33:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 23:33:40,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 20 [2024-09-12 23:33:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:33:40,421 INFO L225 Difference]: With dead ends: 53 [2024-09-12 23:33:40,422 INFO L226 Difference]: Without dead ends: 50 [2024-09-12 23:33:40,422 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 23:33:40,423 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-09-12 23:33:40,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 137 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-09-12 23:33:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-12 23:33:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-12 23:33:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 23:33:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-09-12 23:33:40,451 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 20 [2024-09-12 23:33:40,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:33:40,452 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-09-12 23:33:40,452 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-12 23:33:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-09-12 23:33:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-12 23:33:40,453 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:33:40,453 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:33:40,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 23:33:40,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:33:40,659 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:33:40,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -667440789, now seen corresponding path program 1 times [2024-09-12 23:33:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:33:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811913881] [2024-09-12 23:33:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:40,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:33:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:40,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 23:33:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:40,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 23:33:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:33:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:33:40,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811913881] [2024-09-12 23:33:40,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811913881] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:33:40,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:33:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 23:33:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484549131] [2024-09-12 23:33:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:33:40,843 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 23:33:40,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:33:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 23:33:40,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-12 23:33:40,845 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 23:33:45,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-12 23:33:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:33:45,124 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-09-12 23:33:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 23:33:45,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-12 23:33:45,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:33:45,127 INFO L225 Difference]: With dead ends: 62 [2024-09-12 23:33:45,128 INFO L226 Difference]: Without dead ends: 28 [2024-09-12 23:33:45,129 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-12 23:33:45,130 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-09-12 23:33:45,133 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 34 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-09-12 23:33:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-12 23:33:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-12 23:33:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 23:33:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-09-12 23:33:45,147 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 20 [2024-09-12 23:33:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:33:45,148 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-09-12 23:33:45,148 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 23:33:45,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:45,149 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-09-12 23:33:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 23:33:45,151 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 23:33:45,151 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 23:33:45,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 23:33:45,151 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 23:33:45,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -318947608, now seen corresponding path program 1 times [2024-09-12 23:33:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 23:33:45,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319015879] [2024-09-12 23:33:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 23:33:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 23:33:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179771073] [2024-09-12 23:33:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 23:33:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:33:45,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 23:33:45,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 23:33:45,197 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 23:33:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 23:33:45,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 23:33:45,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 23:33:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 23:33:45,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 23:33:45,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 23:33:45,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319015879] [2024-09-12 23:33:45,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 23:33:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179771073] [2024-09-12 23:33:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179771073] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 23:33:45,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 23:33:45,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 23:33:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260783622] [2024-09-12 23:33:45,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 23:33:45,370 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 23:33:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 23:33:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 23:33:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 23:33:45,371 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2024-09-12 23:33:49,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 23:33:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 23:33:49,446 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-12 23:33:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 23:33:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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 25 [2024-09-12 23:33:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 23:33:49,449 INFO L225 Difference]: With dead ends: 28 [2024-09-12 23:33:49,449 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 23:33:49,449 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 23:33:49,450 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-09-12 23:33:49,450 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-09-12 23:33:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 23:33:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 23:33:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 23:33:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 23:33:49,451 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2024-09-12 23:33:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 23:33:49,452 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 23:33:49,452 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (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) [2024-09-12 23:33:49,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 23:33:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 23:33:49,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 23:33:49,459 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 23:33:49,473 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 23:33:49,660 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 23:33:49,663 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-12 23:33:49,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 23:33:50,196 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 23:33:50,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 11:33:50 BoogieIcfgContainer [2024-09-12 23:33:50,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 23:33:50,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 23:33:50,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 23:33:50,213 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 23:33:50,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 11:33:26" (3/4) ... [2024-09-12 23:33:50,215 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 23:33:50,219 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 23:33:50,219 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-12 23:33:50,219 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 23:33:50,220 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 23:33:50,225 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-09-12 23:33:50,225 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-12 23:33:50,225 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 23:33:50,225 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-12 23:33:50,253 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(counter) == 0) && (((((p == 0) && (n == r)) && (1 <= counter)) && (h == 0)) || ((((p == 0) && (n == r)) && (counter == 0)) && (h == 0)))) [2024-09-12 23:33:50,253 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((p == 0) && (n == r)) && (1 <= counter)) && (\old(counter) == 0)) && (h == 0)) [2024-09-12 23:33:50,319 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 23:33:50,322 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 23:33:50,322 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 23:33:50,322 INFO L158 Benchmark]: Toolchain (without parser) took 24184.36ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 84.0MB in the beginning and 133.8MB in the end (delta: -49.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,323 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 23:33:50,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.81ms. Allocated memory is still 138.4MB. Free memory was 84.0MB in the beginning and 70.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.74ms. Allocated memory is still 138.4MB. Free memory was 70.5MB in the beginning and 69.6MB in the end (delta: 907.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 23:33:50,324 INFO L158 Benchmark]: Boogie Preprocessor took 44.39ms. Allocated memory is still 138.4MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,324 INFO L158 Benchmark]: RCFGBuilder took 490.39ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 161.3MB in the end (delta: -93.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,325 INFO L158 Benchmark]: TraceAbstraction took 23233.51ms. Allocated memory is still 195.0MB. Free memory was 160.2MB in the beginning and 139.1MB in the end (delta: 21.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,325 INFO L158 Benchmark]: Witness Printer took 109.74ms. Allocated memory is still 195.0MB. Free memory was 139.1MB in the beginning and 133.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-12 23:33:50,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.81ms. Allocated memory is still 138.4MB. Free memory was 84.0MB in the beginning and 70.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.74ms. Allocated memory is still 138.4MB. Free memory was 70.5MB in the beginning and 69.6MB in the end (delta: 907.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.39ms. Allocated memory is still 138.4MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.39ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 67.9MB in the beginning and 161.3MB in the end (delta: -93.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 23233.51ms. Allocated memory is still 195.0MB. Free memory was 160.2MB in the beginning and 139.1MB in the end (delta: 21.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 109.74ms. Allocated memory is still 195.0MB. Free memory was 139.1MB in the beginning and 133.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 14]: 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 20.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 377 SdHoareTripleChecker+Invalid, 20.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 140 mSDtfsCounter, 209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 226 SizeOfPredicates, 2 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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: 38]: Loop Invariant Derived loop invariant: (((((p == 0) && (n == r)) && (1 <= counter)) && (\old(counter) == 0)) && (h == 0)) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((\old(counter) == 0) && (((((p == 0) && (n == r)) && (1 <= counter)) && (h == 0)) || ((((p == 0) && (n == r)) && (counter == 0)) && (h == 0)))) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Requires: (counter == 0) Ensures: (counter == 0) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main. Requires: (counter == 0) Ensures: (\old(counter) == 0) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-12 23:33:50,366 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