./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.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 f1d7dc9d 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/hard-u_valuebound100.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 7f73abe50a425917d2dd4066f1792742190b4ae9dbdaa6d6431079d0ef1d76a5 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 12:47:52,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:47:52,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:47:52,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:47:52,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:47:52,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:47:52,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:47:52,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:47:52,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:47:52,917 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:47:52,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:47:52,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:47:52,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:47:52,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:47:52,920 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:47:52,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:47:52,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:47:52,921 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:47:52,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:47:52,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:47:52,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:47:52,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:47:52,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:47:52,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:47:52,927 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:47:52,927 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:47:52,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:47:52,928 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:47:52,928 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:47:52,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:47:52,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:47:52,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:47:52,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:47:52,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:47:52,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:47:52,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:47:52,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f73abe50a425917d2dd4066f1792742190b4ae9dbdaa6d6431079d0ef1d76a5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:47:53,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:47:53,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:47:53,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:47:53,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:47:53,163 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:47:53,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2024-09-20 12:47:54,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:47:54,603 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:47:54,603 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound100.c [2024-09-20 12:47:54,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7644e79ac/c3b1e718ed684546981eeb21382e41ec/FLAG5acf1d144 [2024-09-20 12:47:55,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7644e79ac/c3b1e718ed684546981eeb21382e41ec [2024-09-20 12:47:55,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:47:55,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:47:55,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:47:55,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:47:55,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:47:55,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a9117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55, skipping insertion in model container [2024-09-20 12:47:55,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:47:55,185 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/hard-u_valuebound100.c[537,550] [2024-09-20 12:47:55,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:47:55,203 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:47:55,211 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/hard-u_valuebound100.c[537,550] [2024-09-20 12:47:55,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:47:55,227 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:47:55,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55 WrapperNode [2024-09-20 12:47:55,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:47:55,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:47:55,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:47:55,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:47:55,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,253 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:47:55,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:47:55,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:47:55,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:47:55,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:47:55,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,283 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]. [2024-09-20 12:47:55,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:47:55,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:47:55,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:47:55,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:47:55,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (1/1) ... [2024-09-20 12:47:55,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:47:55,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:47:55,328 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) [2024-09-20 12:47:55,332 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 [2024-09-20 12:47:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:47:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 12:47:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 12:47:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:47:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:47:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:47:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:47:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:47:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:47:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:47:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:47:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:47:55,417 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:47:55,419 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:47:55,531 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 12:47:55,532 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:47:55,545 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:47:55,546 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 12:47:55,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:47:55 BoogieIcfgContainer [2024-09-20 12:47:55,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:47:55,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:47:55,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:47:55,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:47:55,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:47:55" (1/3) ... [2024-09-20 12:47:55,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2636b6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:47:55, skipping insertion in model container [2024-09-20 12:47:55,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:47:55" (2/3) ... [2024-09-20 12:47:55,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2636b6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:47:55, skipping insertion in model container [2024-09-20 12:47:55,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:47:55" (3/3) ... [2024-09-20 12:47:55,552 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound100.c [2024-09-20 12:47:55,564 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:47:55,565 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:47:55,605 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:47:55,610 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;@e63f8bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:47:55,610 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:47:55,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2024-09-20 12:47:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 12:47:55,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:55,619 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:55,619 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:55,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash 367441184, now seen corresponding path program 1 times [2024-09-20 12:47:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338819339] [2024-09-20 12:47:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:55,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:47:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:55,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:47:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:55,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:47:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:55,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:47:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:47:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338819339] [2024-09-20 12:47:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338819339] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:47:55,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:47:55,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:47:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943099858] [2024-09-20 12:47:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:47:55,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:47:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:55,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:47:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:47:55,787 INFO L87 Difference]: Start difference. First operand has 36 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:47:55,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:47:55,811 INFO L93 Difference]: Finished difference Result 66 states and 107 transitions. [2024-09-20 12:47:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:47:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-20 12:47:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:47:55,820 INFO L225 Difference]: With dead ends: 66 [2024-09-20 12:47:55,821 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 12:47:55,824 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:47:55,827 INFO L434 NwaCegarLoop]: 44 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, 44 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:47:55,828 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:47:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 12:47:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 12:47:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2024-09-20 12:47:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-20 12:47:55,862 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 27 [2024-09-20 12:47:55,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:47:55,863 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-20 12:47:55,863 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 12:47:55,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-20 12:47:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 12:47:55,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:55,865 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:55,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:47:55,866 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:55,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash -781266146, now seen corresponding path program 1 times [2024-09-20 12:47:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:55,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540934495] [2024-09-20 12:47:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:47:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:47:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:47:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:47:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:47:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540934495] [2024-09-20 12:47:56,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540934495] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:47:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:47:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:47:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379183550] [2024-09-20 12:47:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:47:56,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:47:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:47:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:47:56,113 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 12:47:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:47:56,165 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2024-09-20 12:47:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:47:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-20 12:47:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:47:56,167 INFO L225 Difference]: With dead ends: 45 [2024-09-20 12:47:56,167 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 12:47:56,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:47:56,168 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:47:56,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:47:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 12:47:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2024-09-20 12:47:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:47:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-09-20 12:47:56,186 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2024-09-20 12:47:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:47:56,187 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-09-20 12:47:56,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-20 12:47:56,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-09-20 12:47:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-20 12:47:56,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:56,190 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:56,191 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 12:47:56,192 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:56,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 992341126, now seen corresponding path program 1 times [2024-09-20 12:47:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:56,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142843595] [2024-09-20 12:47:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:47:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:47:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:47:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:47:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:47:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:47:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:56,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142843595] [2024-09-20 12:47:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142843595] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:47:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:47:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:47:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841017630] [2024-09-20 12:47:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:47:56,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:47:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:47:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:47:56,532 INFO L87 Difference]: Start difference. First operand 36 states and 45 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, (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) [2024-09-20 12:47:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:47:56,699 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2024-09-20 12:47:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:47:56,699 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, (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 32 [2024-09-20 12:47:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:47:56,700 INFO L225 Difference]: With dead ends: 49 [2024-09-20 12:47:56,700 INFO L226 Difference]: Without dead ends: 47 [2024-09-20 12:47:56,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 12:47:56,701 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:47:56,702 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:47:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-20 12:47:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-20 12:47:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:47:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-09-20 12:47:56,717 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 32 [2024-09-20 12:47:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:47:56,717 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-09-20 12:47:56,717 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, (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) [2024-09-20 12:47:56,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-09-20 12:47:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 12:47:56,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:56,720 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:56,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 12:47:56,720 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:56,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1500804130, now seen corresponding path program 1 times [2024-09-20 12:47:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:56,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315211246] [2024-09-20 12:47:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:56,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:47:56,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629899815] [2024-09-20 12:47:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:56,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:47:56,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:47:56,754 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) [2024-09-20 12:47:56,755 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 12:47:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:56,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 12:47:56,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:47:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-20 12:47:56,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:47:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315211246] [2024-09-20 12:47:56,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:47:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629899815] [2024-09-20 12:47:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629899815] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:47:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:47:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-20 12:47:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992200551] [2024-09-20 12:47:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:47:56,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 12:47:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 12:47:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:47:56,972 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 12:47:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:47:57,220 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-09-20 12:47:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 12:47:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2024-09-20 12:47:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:47:57,221 INFO L225 Difference]: With dead ends: 66 [2024-09-20 12:47:57,222 INFO L226 Difference]: Without dead ends: 53 [2024-09-20 12:47:57,222 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-09-20 12:47:57,223 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:47:57,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 183 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:47:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-20 12:47:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-20 12:47:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:47:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-09-20 12:47:57,232 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2024-09-20 12:47:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:47:57,232 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-09-20 12:47:57,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 12:47:57,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-09-20 12:47:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 12:47:57,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:57,233 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:57,247 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 12:47:57,434 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:47:57,435 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:57,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1357220557, now seen corresponding path program 1 times [2024-09-20 12:47:57,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501214618] [2024-09-20 12:47:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:47:57,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889534769] [2024-09-20 12:47:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:57,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:47:57,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:47:57,455 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) [2024-09-20 12:47:57,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 12:47:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:57,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 12:47:57,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:47:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:47:57,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:47:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-20 12:47:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501214618] [2024-09-20 12:47:58,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:47:58,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889534769] [2024-09-20 12:47:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889534769] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:47:58,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:47:58,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2024-09-20 12:47:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399564575] [2024-09-20 12:47:58,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:47:58,483 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 12:47:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 12:47:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-20 12:47:58,484 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-20 12:47:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:47:59,119 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-20 12:47:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 12:47:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 44 [2024-09-20 12:47:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:47:59,125 INFO L225 Difference]: With dead ends: 71 [2024-09-20 12:47:59,125 INFO L226 Difference]: Without dead ends: 63 [2024-09-20 12:47:59,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-09-20 12:47:59,126 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:47:59,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:47:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-20 12:47:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-20 12:47:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 10 states have call predecessors, (16), 9 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:47:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2024-09-20 12:47:59,142 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 44 [2024-09-20 12:47:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:47:59,143 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2024-09-20 12:47:59,143 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 12 states have internal predecessors, (28), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-09-20 12:47:59,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2024-09-20 12:47:59,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-20 12:47:59,146 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:47:59,146 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:47:59,158 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 12:47:59,350 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 [2024-09-20 12:47:59,351 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:47:59,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:47:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1728018148, now seen corresponding path program 1 times [2024-09-20 12:47:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:47:59,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671185774] [2024-09-20 12:47:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:59,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:47:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:47:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215645987] [2024-09-20 12:47:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:47:59,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:47:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:47:59,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:47:59,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 12:47:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:47:59,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 12:47:59,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:47:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-20 12:47:59,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:47:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-20 12:47:59,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:47:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671185774] [2024-09-20 12:47:59,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:47:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215645987] [2024-09-20 12:47:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215645987] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 12:47:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:47:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-09-20 12:47:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539426057] [2024-09-20 12:47:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:47:59,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 12:47:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:47:59,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 12:47:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-20 12:47:59,601 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-20 12:48:03,936 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 [] [2024-09-20 12:48:07,972 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 [] [2024-09-20 12:48:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:48:07,988 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-09-20 12:48:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:48:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2024-09-20 12:48:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:48:07,989 INFO L225 Difference]: With dead ends: 73 [2024-09-20 12:48:07,989 INFO L226 Difference]: Without dead ends: 71 [2024-09-20 12:48:07,989 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:48:07,990 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:48:07,990 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 125 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-09-20 12:48:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-20 12:48:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2024-09-20 12:48:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:48:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2024-09-20 12:48:08,001 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 54 [2024-09-20 12:48:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:48:08,002 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2024-09-20 12:48:08,002 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-20 12:48:08,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:48:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2024-09-20 12:48:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-20 12:48:08,003 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:48:08,003 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:48:08,010 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 12:48:08,203 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 12:48:08,204 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:48:08,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:48:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash -752924724, now seen corresponding path program 1 times [2024-09-20 12:48:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:48:08,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675641411] [2024-09-20 12:48:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:48:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:48:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:48:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 12:48:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:48:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:48:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:48:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:48:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:48:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:48:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:48:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:48:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:48:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:48:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-09-20 12:48:08,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:48:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675641411] [2024-09-20 12:48:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675641411] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:48:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785903265] [2024-09-20 12:48:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:48:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:48:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:48:08,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:48:08,338 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 12:48:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:08,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 12:48:08,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:48:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-09-20 12:48:08,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:48:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785903265] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:48:08,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:48:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2024-09-20 12:48:08,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570540105] [2024-09-20 12:48:08,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:48:08,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 12:48:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:48:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 12:48:08,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:48:08,517 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-20 12:48:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:48:08,698 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2024-09-20 12:48:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 12:48:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 72 [2024-09-20 12:48:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:48:08,699 INFO L225 Difference]: With dead ends: 102 [2024-09-20 12:48:08,700 INFO L226 Difference]: Without dead ends: 94 [2024-09-20 12:48:08,700 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-20 12:48:08,700 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:48:08,700 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 232 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:48:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-20 12:48:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2024-09-20 12:48:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 58 states have internal predecessors, (61), 26 states have call successors, (26), 13 states have call predecessors, (26), 12 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:48:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-09-20 12:48:08,730 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 72 [2024-09-20 12:48:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:48:08,730 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-09-20 12:48:08,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-20 12:48:08,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:48:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-09-20 12:48:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-20 12:48:08,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:48:08,735 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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, 1, 1] [2024-09-20 12:48:08,748 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 12:48:08,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:48:08,936 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:48:08,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:48:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1452252536, now seen corresponding path program 1 times [2024-09-20 12:48:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:48:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489803649] [2024-09-20 12:48:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:48:08,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:48:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 12:48:08,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264176137] [2024-09-20 12:48:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:48:08,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:48:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:48:08,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:48:08,988 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 12:48:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:48:09,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-20 12:48:09,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:48:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 54 proven. 23 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-20 12:48:10,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:50:37,237 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 12:51:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 57 proven. 7 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-09-20 12:51:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:51:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489803649] [2024-09-20 12:51:29,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 12:51:29,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264176137] [2024-09-20 12:51:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264176137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:51:29,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 12:51:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2024-09-20 12:51:29,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081244440] [2024-09-20 12:51:29,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 12:51:29,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 12:51:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:51:29,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 12:51:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=463, Unknown=4, NotChecked=0, Total=552 [2024-09-20 12:51:29,062 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 18 states have internal predecessors, (41), 9 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2024-09-20 12:51:33,494 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 [] [2024-09-20 12:51:37,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:46,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:50,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:54,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:51:58,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:52:02,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:52:06,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:52:10,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-20 12:52:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:52:11,664 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2024-09-20 12:52:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 12:52:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 18 states have internal predecessors, (41), 9 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) Word has length 74 [2024-09-20 12:52:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:52:11,665 INFO L225 Difference]: With dead ends: 113 [2024-09-20 12:52:11,665 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 12:52:11,666 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=131, Invalid=676, Unknown=5, NotChecked=0, Total=812 [2024-09-20 12:52:11,667 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 40 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2024-09-20 12:52:11,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 239 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 267 Invalid, 9 Unknown, 0 Unchecked, 37.9s Time] [2024-09-20 12:52:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 12:52:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 12:52:11,667 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) [2024-09-20 12:52:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 12:52:11,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2024-09-20 12:52:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:52:11,668 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 12:52:11,668 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 18 states have internal predecessors, (41), 9 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2024-09-20 12:52:11,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:52:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 12:52:11,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 12:52:11,670 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 12:52:11,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 12:52:11,874 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-20 12:52:11,877 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:52:11,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 12:52:20,752 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 12:52:20,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:52:20 BoogieIcfgContainer [2024-09-20 12:52:20,773 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 12:52:20,773 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 12:52:20,773 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 12:52:20,773 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 12:52:20,773 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:47:55" (3/4) ... [2024-09-20 12:52:20,781 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 12:52:20,834 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 12:52:20,835 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 12:52:20,835 INFO L158 Benchmark]: Toolchain (without parser) took 265817.87ms. Allocated memory was 176.2MB in the beginning and 253.8MB in the end (delta: 77.6MB). Free memory was 104.5MB in the beginning and 209.6MB in the end (delta: -105.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:52:20,835 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:52:20,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.55ms. Allocated memory is still 176.2MB. Free memory was 104.3MB in the beginning and 143.5MB in the end (delta: -39.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-09-20 12:52:20,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.10ms. Allocated memory is still 253.8MB. Free memory was 225.6MB in the beginning and 225.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 12:52:20,836 INFO L158 Benchmark]: Boogie Preprocessor took 41.11ms. Allocated memory is still 253.8MB. Free memory was 225.6MB in the beginning and 223.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:52:20,836 INFO L158 Benchmark]: RCFGBuilder took 250.09ms. Allocated memory is still 253.8MB. Free memory was 223.5MB in the beginning and 208.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 12:52:20,836 INFO L158 Benchmark]: TraceAbstraction took 265224.72ms. Allocated memory is still 253.8MB. Free memory was 207.8MB in the beginning and 212.7MB in the end (delta: -4.9MB). Peak memory consumption was 136.7MB. Max. memory is 16.1GB. [2024-09-20 12:52:20,836 INFO L158 Benchmark]: Witness Printer took 61.75ms. Allocated memory is still 253.8MB. Free memory was 212.7MB in the beginning and 209.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 12:52:20,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 176.2MB. Free memory is still 129.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.55ms. Allocated memory is still 176.2MB. Free memory was 104.3MB in the beginning and 143.5MB in the end (delta: -39.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.10ms. Allocated memory is still 253.8MB. Free memory was 225.6MB in the beginning and 225.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.11ms. Allocated memory is still 253.8MB. Free memory was 225.6MB in the beginning and 223.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.09ms. Allocated memory is still 253.8MB. Free memory was 223.5MB in the beginning and 208.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 265224.72ms. Allocated memory is still 253.8MB. Free memory was 207.8MB in the beginning and 212.7MB in the end (delta: -4.9MB). Peak memory consumption was 136.7MB. Max. memory is 16.1GB. * Witness Printer took 61.75ms. Allocated memory is still 253.8MB. Free memory was 212.7MB in the beginning and 209.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 256.3s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 47.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 1276 SdHoareTripleChecker+Invalid, 47.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1012 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 861 IncrementalHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 264 mSDtfsCounter, 861 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 452 SyntacticMatches, 9 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 64, 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, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 202.1s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 599 ConstructedInterpolants, 0 QuantifiedInterpolants, 2167 SizeOfPredicates, 10 NumberOfNonLiveVariables, 646 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 784/834 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: 46]: Loop Invariant Derived loop invariant: ((((((A <= 100) && (r == A)) && (1 <= B)) && (q == 0)) && (B <= 100)) && (d == (((unsigned long long) B * p) % 4294967296))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((A <= 100) && (r == A)) && (1 <= B)) && (A <= ((long long) A + r))) && (q == 0)) && (B <= 100)) && (d == (((unsigned long long) B * p) % 4294967296))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: 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! [2024-09-20 12:52:20,970 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