./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 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/ps6-ll_valuebound5.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f --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-27b4987-m [2024-09-21 12:23:19,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:23:19,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:23:19,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:23:19,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:23:19,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:23:19,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:23:19,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:23:19,281 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:23:19,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:23:19,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:23:19,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:23:19,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:23:19,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:23:19,284 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:23:19,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:23:19,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:23:19,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:23:19,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:23:19,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:23:19,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:23:19,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:23:19,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:23:19,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:23:19,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:23:19,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:23:19,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:23:19,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:23:19,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:23:19,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:23:19,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:23:19,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:23:19,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:23:19,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:23:19,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:23:19,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:23:19,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:23:19,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:23:19,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:23:19,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:23:19,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:23:19,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:23:19,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:23:19,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:23:19,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:23:19,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:23:19,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:23:19,570 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:23:19,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-21 12:23:21,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:23:21,498 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:23:21,499 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2024-09-21 12:23:21,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/28e52822d/a2ea058fa344477cac6570766ff38e88/FLAG378c3f164 [2024-09-21 12:23:21,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/28e52822d/a2ea058fa344477cac6570766ff38e88 [2024-09-21 12:23:21,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:23:21,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:23:21,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:23:21,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:23:21,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:23:21,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a798383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21, skipping insertion in model container [2024-09-21 12:23:21,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:23:21,804 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/ps6-ll_valuebound5.c[458,471] [2024-09-21 12:23:21,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:23:21,850 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:23:21,863 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/ps6-ll_valuebound5.c[458,471] [2024-09-21 12:23:21,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:23:21,894 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:23:21,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21 WrapperNode [2024-09-21 12:23:21,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:23:21,896 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:23:21,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:23:21,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:23:21,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,917 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:23:21,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:23:21,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:23:21,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:23:21,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:23:21,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,947 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]. [2024-09-21 12:23:21,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:23:21,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:23:21,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:23:21,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:23:21,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (1/1) ... [2024-09-21 12:23:21,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:23:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:23:22,000 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) [2024-09-21 12:23:22,006 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 [2024-09-21 12:23:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:23:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 12:23:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 12:23:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:23:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:23:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:23:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:23:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:23:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:23:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:23:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 12:23:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 12:23:22,113 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:23:22,115 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:23:22,239 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 12:23:22,239 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:23:22,260 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:23:22,260 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 12:23:22,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:23:22 BoogieIcfgContainer [2024-09-21 12:23:22,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:23:22,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:23:22,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:23:22,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:23:22,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:23:21" (1/3) ... [2024-09-21 12:23:22,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45895923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:23:22, skipping insertion in model container [2024-09-21 12:23:22,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:23:21" (2/3) ... [2024-09-21 12:23:22,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45895923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:23:22, skipping insertion in model container [2024-09-21 12:23:22,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:23:22" (3/3) ... [2024-09-21 12:23:22,269 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2024-09-21 12:23:22,290 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:23:22,293 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:23:22,347 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:23:22,354 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;@eec6b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:23:22,355 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:23:22,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 12:23:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 12:23:22,367 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:23:22,368 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:23:22,369 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:23:22,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-21 12:23:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:23:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446893146] [2024-09-21 12:23:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:22,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:23:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:22,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:23:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:22,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:23:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:22,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:23:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:23:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:23:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446893146] [2024-09-21 12:23:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446893146] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:23:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:23:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 12:23:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470569625] [2024-09-21 12:23:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:23:22,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 12:23:22,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:23:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 12:23:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 12:23:22,569 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 12:23:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:23:22,593 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-21 12:23:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 12:23:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-21 12:23:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:23:22,606 INFO L225 Difference]: With dead ends: 48 [2024-09-21 12:23:22,606 INFO L226 Difference]: Without dead ends: 23 [2024-09-21 12:23:22,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 12:23:22,613 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-21 12:23:22,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:23:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-21 12:23:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-21 12:23:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 12:23:22,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-21 12:23:22,646 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-21 12:23:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:23:22,646 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-21 12:23:22,646 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 12:23:22,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:22,647 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-21 12:23:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 12:23:22,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:23:22,649 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:23:22,649 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:23:22,649 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:23:22,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-21 12:23:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:23:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648441086] [2024-09-21 12:23:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:23:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:23:22,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948280043] [2024-09-21 12:23:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:22,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:22,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:23:22,680 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) [2024-09-21 12:23:22,686 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:23:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:22,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 12:23:22,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:23:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:23:22,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:23:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:23:22,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648441086] [2024-09-21 12:23:22,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:23:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948280043] [2024-09-21 12:23:22,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948280043] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:23:22,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:23:22,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:23:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918977946] [2024-09-21 12:23:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:23:22,918 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:23:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:23:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:23:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:23:22,919 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-21 12:23:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:23:22,989 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-21 12:23:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:23:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-21 12:23:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:23:22,992 INFO L225 Difference]: With dead ends: 34 [2024-09-21 12:23:22,992 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 12:23:22,993 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 12:23:22,995 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:23:22,996 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:23:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 12:23:23,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-21 12:23:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 12:23:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-21 12:23:23,011 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-21 12:23:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:23:23,012 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-21 12:23:23,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-21 12:23:23,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-21 12:23:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-21 12:23:23,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:23:23,016 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:23:23,035 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 12:23:23,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:23,218 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:23:23,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-21 12:23:23,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:23:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666909761] [2024-09-21 12:23:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:23:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:23:23,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276746132] [2024-09-21 12:23:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:23,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:23,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:23:23,270 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) [2024-09-21 12:23:23,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:23:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:23,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-21 12:23:23,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:23:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 12:23:23,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:23:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:23:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:23:23,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666909761] [2024-09-21 12:23:23,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:23:23,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276746132] [2024-09-21 12:23:23,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276746132] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 12:23:23,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:23:23,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-21 12:23:23,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128819220] [2024-09-21 12:23:23,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:23:23,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:23:23,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:23:23,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:23:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-21 12:23:23,491 INFO L87 Difference]: Start difference. First operand 30 states and 33 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 12:23:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:23:23,536 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-21 12:23:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:23:23,537 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-21 12:23:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:23:23,538 INFO L225 Difference]: With dead ends: 36 [2024-09-21 12:23:23,538 INFO L226 Difference]: Without dead ends: 32 [2024-09-21 12:23:23,538 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 12:23:23,539 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:23:23,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:23:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-21 12:23:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-21 12:23:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 12:23:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-21 12:23:23,552 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-21 12:23:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:23:23,553 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-21 12:23:23,553 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 12:23:23,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-21 12:23:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-21 12:23:23,555 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:23:23,555 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:23:23,573 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:23:23,759 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:23,760 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:23:23,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-21 12:23:23,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:23:23,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864438023] [2024-09-21 12:23:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:23,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:23:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:23:23,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607683813] [2024-09-21 12:23:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:23,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:23,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:23:23,848 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) [2024-09-21 12:23:23,852 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:23:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:23:23,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-21 12:23:23,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:23:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-21 12:23:24,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:23:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-21 12:23:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:23:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864438023] [2024-09-21 12:23:24,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:23:24,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607683813] [2024-09-21 12:23:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607683813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:23:24,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:23:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-21 12:23:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260411441] [2024-09-21 12:23:24,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:23:24,565 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 12:23:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:23:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 12:23:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-21 12:23:24,566 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-21 12:23:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:23:24,880 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-21 12:23:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 12:23:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-21 12:23:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:23:24,882 INFO L225 Difference]: With dead ends: 53 [2024-09-21 12:23:24,882 INFO L226 Difference]: Without dead ends: 45 [2024-09-21 12:23:24,883 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-21 12:23:24,884 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:23:24,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:23:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-21 12:23:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-21 12:23:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-21 12:23:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-21 12:23:24,900 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-21 12:23:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:23:24,900 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-21 12:23:24,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-21 12:23:24,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-21 12:23:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-21 12:23:24,903 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:23:24,903 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:23:24,923 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 12:23:25,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:25,105 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:23:25,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:23:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-21 12:23:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:23:25,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397282729] [2024-09-21 12:23:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:23:25,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:23:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 12:23:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691153877] [2024-09-21 12:23:25,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:23:25,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:23:25,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:23:25,143 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) [2024-09-21 12:23:25,173 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:23:25,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:23:25,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:23:25,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-21 12:23:25,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:23:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-21 12:23:25,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:24:40,764 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (+ 16 (* 8 c_main_~y~0) .cse0) (+ (* c_main_~y~0 c_main_~k~0) (* 4 c_main_~k~0))) (not (= (+ c_main_~c~0 4) c_main_~k~0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2024-09-21 12:24:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 12 not checked. [2024-09-21 12:24:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:24:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397282729] [2024-09-21 12:24:49,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 12:24:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691153877] [2024-09-21 12:24:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691153877] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:24:49,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 12:24:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-21 12:24:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934611588] [2024-09-21 12:24:49,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 12:24:49,453 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-21 12:24:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:24:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-21 12:24:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=549, Unknown=5, NotChecked=48, Total=702 [2024-09-21 12:24:49,457 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-21 12:24:53,900 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_main_~y~0 c_main_~y~0))) (let ((.cse0 (not (= (+ (* 5 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0)) (* (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) 2) (* 6 (* c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0))) (+ (* 12 c_main_~x~0) .cse2)))) (.cse1 (* c_main_~y~0 c_main_~k~0))) (and (<= c_main_~k~0 256) (or .cse0 (= (+ .cse1 c_main_~k~0) (+ (* 2 c_main_~y~0) .cse2 1)) (not (= (+ c_main_~c~0 1) c_main_~k~0))) (or .cse0 (< c_main_~c~0 c_main_~k~0) (= .cse1 .cse2)) (or (not (= (+ 2 c_main_~c~0) c_main_~k~0)) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse2) 12) 0)) (= (+ .cse1 (* 2 c_main_~k~0)) (+ (* 4 c_main_~y~0) 4 .cse2)))))) is different from false [2024-09-21 12:25:06,939 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-21 12:25:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:06,991 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-21 12:25:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-21 12:25:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) Word has length 60 [2024-09-21 12:25:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:06,993 INFO L225 Difference]: With dead ends: 71 [2024-09-21 12:25:06,993 INFO L226 Difference]: Without dead ends: 63 [2024-09-21 12:25:06,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=184, Invalid=1008, Unknown=6, NotChecked=134, Total=1332 [2024-09-21 12:25:06,995 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:06,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 302 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 306 Invalid, 0 Unknown, 68 Unchecked, 0.3s Time] [2024-09-21 12:25:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-21 12:25:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-09-21 12:25:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 15 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-21 12:25:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-09-21 12:25:07,014 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 60 [2024-09-21 12:25:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:07,015 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-09-21 12:25:07,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 21 states have internal predecessors, (43), 15 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2024-09-21 12:25:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-09-21 12:25:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-21 12:25:07,017 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:07,017 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:07,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 12:25:07,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:07,219 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:07,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1028597280, now seen corresponding path program 3 times [2024-09-21 12:25:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654607403] [2024-09-21 12:25:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 12:25:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 12:25:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-21 12:25:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 12:25:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 12:25:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 12:25:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 12:25:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 12:25:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 12:25:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 12:25:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 12:25:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-09-21 12:25:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654607403] [2024-09-21 12:25:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654607403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766448747] [2024-09-21 12:25:07,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:25:07,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:07,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:07,918 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) [2024-09-21 12:25:07,925 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:25:07,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-21 12:25:07,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:07,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 12:25:07,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 188 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-21 12:25:08,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 128 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-09-21 12:25:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766448747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:08,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2024-09-21 12:25:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350015509] [2024-09-21 12:25:08,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:08,479 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-21 12:25:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-21 12:25:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=626, Unknown=0, NotChecked=0, Total=930 [2024-09-21 12:25:08,481 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 29 states have internal predecessors, (71), 28 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2024-09-21 12:25:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:08,582 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2024-09-21 12:25:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-21 12:25:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 29 states have internal predecessors, (71), 28 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) Word has length 88 [2024-09-21 12:25:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:08,584 INFO L225 Difference]: With dead ends: 67 [2024-09-21 12:25:08,584 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 12:25:08,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2024-09-21 12:25:08,587 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:08,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 138 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:08,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 12:25:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 12:25:08,589 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) [2024-09-21 12:25:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 12:25:08,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 88 [2024-09-21 12:25:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:08,589 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 12:25:08,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 29 states have internal predecessors, (71), 28 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 28 states have call predecessors, (33), 28 states have call successors, (33) [2024-09-21 12:25:08,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 12:25:08,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 12:25:08,593 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 12:25:08,613 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 12:25:08,794 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-21 12:25:08,799 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-09-21 12:25:08,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 12:25:09,869 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 12:25:09,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:25:09 BoogieIcfgContainer [2024-09-21 12:25:09,889 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 12:25:09,890 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 12:25:09,890 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 12:25:09,890 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 12:25:09,891 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:23:22" (3/4) ... [2024-09-21 12:25:09,892 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 12:25:09,948 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 12:25:09,949 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 12:25:09,949 INFO L158 Benchmark]: Toolchain (without parser) took 108418.27ms. Allocated memory was 184.5MB in the beginning and 272.6MB in the end (delta: 88.1MB). Free memory was 114.4MB in the beginning and 195.4MB in the end (delta: -81.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,950 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:25:09,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.25ms. Allocated memory is still 184.5MB. Free memory was 114.2MB in the beginning and 150.5MB in the end (delta: -36.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.87ms. Allocated memory is still 184.5MB. Free memory was 150.5MB in the beginning and 149.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,951 INFO L158 Benchmark]: Boogie Preprocessor took 42.08ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 148.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:25:09,952 INFO L158 Benchmark]: RCFGBuilder took 299.65ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 134.8MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,952 INFO L158 Benchmark]: TraceAbstraction took 107626.48ms. Allocated memory was 184.5MB in the beginning and 272.6MB in the end (delta: 88.1MB). Free memory was 134.8MB in the beginning and 197.5MB in the end (delta: -62.7MB). Peak memory consumption was 138.0MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,952 INFO L158 Benchmark]: Witness Printer took 59.02ms. Allocated memory is still 272.6MB. Free memory was 197.5MB in the beginning and 195.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:25:09,954 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.25ms. Allocated memory is still 184.5MB. Free memory was 114.2MB in the beginning and 150.5MB in the end (delta: -36.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.87ms. Allocated memory is still 184.5MB. Free memory was 150.5MB in the beginning and 149.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.08ms. Allocated memory is still 184.5MB. Free memory was 149.5MB in the beginning and 148.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.65ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 134.8MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 107626.48ms. Allocated memory was 184.5MB in the beginning and 272.6MB in the end (delta: 88.1MB). Free memory was 134.8MB in the beginning and 197.5MB in the end (delta: -62.7MB). Peak memory consumption was 138.0MB. Max. memory is 16.1GB. * Witness Printer took 59.02ms. Allocated memory is still 272.6MB. Free memory was 197.5MB in the beginning and 195.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 106.5s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 796 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 653 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 143 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 416 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 68.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, InterpolantAutomatonStates: 60, 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, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 86.3s InterpolantComputationTime, 493 NumberOfCodeBlocks, 493 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 2849 SizeOfPredicates, 8 NumberOfNonLiveVariables, 615 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 1109/1222 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: 28]: Loop Invariant Derived loop invariant: ((((((((((k <= 5) && ((k == 3) || (3 < k))) && (276 == x)) && (y == 3)) && (c == 3)) || (((((k <= 5) && ((1 < k) || (k == 1))) && (y == 1)) && (x == 1)) && (c == 1))) || (((((x == 33) && (y == 2)) && (k <= 5)) && ((k == 2) || (2 < k))) && (c == 2))) || (((((x == 0) && (k <= 5)) && (0 <= k)) && (c == 0)) && (y == 0))) || (((((k <= 5) && (0 <= k)) && (((__int128) y * y) == ((__int128) k * y))) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) && (5 <= c))) || (((((k <= 5) && (4 <= k)) && (y == 4)) && (c == 4)) && (1300 == x))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-21 12:25:09,988 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE