./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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_valuebound50.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 aa3033c827040052fc2b3f2ac84da9b892249c5596676af10298d2e88bf55166 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:43:38,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:43:38,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:43:38,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:43:38,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:43:38,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:43:38,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:43:38,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:43:38,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:43:38,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:43:38,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:43:38,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:43:38,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:43:38,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:43:38,237 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:43:38,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:43:38,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:43:38,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:43:38,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:43:38,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:43:38,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:43:38,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:43:38,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:43:38,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:43:38,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:43:38,241 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:43:38,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:43:38,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:43:38,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:43:38,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:43:38,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:43:38,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:43:38,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:43:38,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:43:38,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:43:38,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:43:38,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:43:38,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:43:38,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:43:38,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:43:38,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:43:38,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:43:38,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3033c827040052fc2b3f2ac84da9b892249c5596676af10298d2e88bf55166 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:43:38,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:43:38,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:43:38,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:43:38,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:43:38,520 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:43:38,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c [2024-09-13 09:43:39,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:43:40,083 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:43:40,084 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c [2024-09-13 09:43:40,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b914a5224/d2531bba9d584bf48f8dcf4cc23b2827/FLAG364eb4ff7 [2024-09-13 09:43:40,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b914a5224/d2531bba9d584bf48f8dcf4cc23b2827 [2024-09-13 09:43:40,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:43:40,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:43:40,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:43:40,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:43:40,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:43:40,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8181dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40, skipping insertion in model container [2024-09-13 09:43:40,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:43:40,269 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c[458,471] [2024-09-13 09:43:40,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:43:40,293 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:43:40,304 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound50.c[458,471] [2024-09-13 09:43:40,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:43:40,325 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:43:40,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40 WrapperNode [2024-09-13 09:43:40,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:43:40,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:43:40,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:43:40,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:43:40,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,347 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:43:40,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:43:40,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:43:40,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:43:40,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:43:40,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,373 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]. [2024-09-13 09:43:40,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,378 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:43:40,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:43:40,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:43:40,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:43:40,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (1/1) ... [2024-09-13 09:43:40,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:43:40,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:43:40,419 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) [2024-09-13 09:43:40,423 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 [2024-09-13 09:43:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:43:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 09:43:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 09:43:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:43:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:43:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:43:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:43:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:43:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:43:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:43:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 09:43:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 09:43:40,533 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:43:40,536 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:43:40,711 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 09:43:40,711 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:43:40,739 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:43:40,739 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 09:43:40,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:43:40 BoogieIcfgContainer [2024-09-13 09:43:40,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:43:40,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:43:40,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:43:40,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:43:40,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:43:40" (1/3) ... [2024-09-13 09:43:40,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770a0f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:43:40, skipping insertion in model container [2024-09-13 09:43:40,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:43:40" (2/3) ... [2024-09-13 09:43:40,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770a0f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:43:40, skipping insertion in model container [2024-09-13 09:43:40,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:43:40" (3/3) ... [2024-09-13 09:43:40,749 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound50.c [2024-09-13 09:43:40,765 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:43:40,765 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:43:40,832 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:43:40,838 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;@45671895, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:43:40,839 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:43:40,842 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) [2024-09-13 09:43:40,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 09:43:40,850 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:43:40,851 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:43:40,851 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:43:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-13 09:43:40,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:43:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000632254] [2024-09-13 09:43:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:43:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:40,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:43:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:41,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:43:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:41,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:43:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:43:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:43:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000632254] [2024-09-13 09:43:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000632254] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:43:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:43:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 09:43:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087766567] [2024-09-13 09:43:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:43:41,029 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 09:43:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:43:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 09:43:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 09:43:41,053 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) [2024-09-13 09:43:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:43:41,079 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-13 09:43:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 09:43:41,083 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 [2024-09-13 09:43:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:43:41,090 INFO L225 Difference]: With dead ends: 48 [2024-09-13 09:43:41,090 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 09:43:41,094 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 [2024-09-13 09:43:41,099 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 [2024-09-13 09:43:41,099 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] [2024-09-13 09:43:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 09:43:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-13 09:43:41,129 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) [2024-09-13 09:43:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-13 09:43:41,133 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-13 09:43:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:43:41,133 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-13 09:43:41,134 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) [2024-09-13 09:43:41,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-13 09:43:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 09:43:41,138 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:43:41,138 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:43:41,138 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:43:41,139 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:43:41,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-13 09:43:41,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:43:41,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132588350] [2024-09-13 09:43:41,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:41,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:43:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:43:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005731929] [2024-09-13 09:43:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:41,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:43:41,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:43:41,186 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) [2024-09-13 09:43:41,199 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:43:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:41,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 09:43:41,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:43:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:43:41,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 09:43:41,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:43:41,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132588350] [2024-09-13 09:43:41,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:43:41,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005731929] [2024-09-13 09:43:41,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005731929] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:43:41,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:43:41,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:43:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619688381] [2024-09-13 09:43:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:43:41,430 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:43:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:43:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:43:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:43:41,431 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) [2024-09-13 09:43:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:43:41,501 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-13 09:43:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:43:41,502 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 [2024-09-13 09:43:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:43:41,502 INFO L225 Difference]: With dead ends: 34 [2024-09-13 09:43:41,503 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 09:43:41,503 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 09:43:41,504 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 [2024-09-13 09:43:41,505 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] [2024-09-13 09:43:41,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 09:43:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-13 09:43:41,511 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) [2024-09-13 09:43:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-13 09:43:41,512 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-13 09:43:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:43:41,513 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-13 09:43:41,513 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) [2024-09-13 09:43:41,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-13 09:43:41,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-13 09:43:41,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:43:41,515 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] [2024-09-13 09:43:41,530 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 09:43:41,719 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 [2024-09-13 09:43:41,720 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:43:41,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-13 09:43:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:43:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058286169] [2024-09-13 09:43:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:43:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:43:41,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221699670] [2024-09-13 09:43:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:41,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:43:41,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:43:41,755 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) [2024-09-13 09:43:41,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:43:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:41,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 09:43:41,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:43:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:43:41,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:43:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:43:42,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:43:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058286169] [2024-09-13 09:43:42,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:43:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221699670] [2024-09-13 09:43:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221699670] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 09:43:42,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 09:43:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 09:43:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002900220] [2024-09-13 09:43:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:43:42,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:43:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:43:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:43:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 09:43:42,003 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) [2024-09-13 09:43:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:43:42,063 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-13 09:43:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:43:42,064 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 [2024-09-13 09:43:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:43:42,065 INFO L225 Difference]: With dead ends: 36 [2024-09-13 09:43:42,066 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 09:43:42,066 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 09:43:42,067 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 [2024-09-13 09:43:42,069 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] [2024-09-13 09:43:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 09:43:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-13 09:43:42,083 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) [2024-09-13 09:43:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-13 09:43:42,084 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-13 09:43:42,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:43:42,086 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-13 09:43:42,086 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) [2024-09-13 09:43:42,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:42,087 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-13 09:43:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 09:43:42,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:43:42,089 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] [2024-09-13 09:43:42,105 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:43:42,290 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 [2024-09-13 09:43:42,290 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:43:42,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-13 09:43:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:43:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517631147] [2024-09-13 09:43:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:43:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:43:42,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426221068] [2024-09-13 09:43:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:43:42,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:43:42,319 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) [2024-09-13 09:43:42,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 09:43:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:43:42,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 09:43:42,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:43:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 09:43:42,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:43:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 09:43:43,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:43:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517631147] [2024-09-13 09:43:43,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:43:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426221068] [2024-09-13 09:43:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426221068] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:43:43,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:43:43,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-13 09:43:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203991747] [2024-09-13 09:43:43,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:43:43,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 09:43:43,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:43:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 09:43:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:43:43,114 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) [2024-09-13 09:43:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:43:43,442 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-13 09:43:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 09:43:43,443 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 [2024-09-13 09:43:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:43:43,444 INFO L225 Difference]: With dead ends: 53 [2024-09-13 09:43:43,444 INFO L226 Difference]: Without dead ends: 45 [2024-09-13 09:43:43,445 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 [2024-09-13 09:43:43,446 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 [2024-09-13 09:43:43,450 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] [2024-09-13 09:43:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-13 09:43:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-13 09:43:43,473 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) [2024-09-13 09:43:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-13 09:43:43,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-13 09:43:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:43:43,476 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-13 09:43:43,476 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) [2024-09-13 09:43:43,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-13 09:43:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-13 09:43:43,483 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:43:43,483 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] [2024-09-13 09:43:43,502 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 09:43:43,683 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 [2024-09-13 09:43:43,684 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:43:43,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:43:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-13 09:43:43,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:43:43,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974053431] [2024-09-13 09:43:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:43:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:43:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:43:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291734600] [2024-09-13 09:43:43,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:43:43,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:43:43,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:43:43,725 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) [2024-09-13 09:43:43,726 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 09:43:43,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:43:43,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:43:43,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-13 09:43:43,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:43:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 38 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-13 09:43:44,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:44:42,274 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 [2024-09-13 09:44:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 12 not checked. [2024-09-13 09:44:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:44:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974053431] [2024-09-13 09:44:50,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:44:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291734600] [2024-09-13 09:44:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291734600] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:44:50,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:44:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 27 [2024-09-13 09:44:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649802562] [2024-09-13 09:44:50,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:44:50,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 09:44:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:44:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 09:44:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=4, NotChecked=48, Total=702 [2024-09-13 09:44:50,375 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) [2024-09-13 09:44:54,807 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 [2024-09-13 09:44:58,847 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 (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 [2024-09-13 09:44:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:44:59,039 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-09-13 09:44:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 09:44:59,040 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 [2024-09-13 09:44:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:44:59,041 INFO L225 Difference]: With dead ends: 71 [2024-09-13 09:44:59,041 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 09:44:59,042 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=185, Invalid=1011, Unknown=6, NotChecked=204, Total=1406 [2024-09-13 09:44:59,043 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:44:59,043 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 302 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 306 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2024-09-13 09:44:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 09:44:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-09-13 09:44:59,066 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) [2024-09-13 09:44:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2024-09-13 09:44:59,071 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 60 [2024-09-13 09:44:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:44:59,072 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2024-09-13 09:44:59,072 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) [2024-09-13 09:44:59,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:44:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2024-09-13 09:44:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-09-13 09:44:59,074 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:44:59,074 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] [2024-09-13 09:44:59,095 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 09:44:59,274 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 [2024-09-13 09:44:59,274 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:44:59,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:44:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1028597280, now seen corresponding path program 3 times [2024-09-13 09:44:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:44:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500371638] [2024-09-13 09:44:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:44:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:44:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:44:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911505507] [2024-09-13 09:44:59,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:44:59,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:44:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:44:59,353 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) [2024-09-13 09:44:59,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 09:44:59,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-13 09:44:59,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:44:59,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-13 09:44:59,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:44:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 111 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-09-13 09:44:59,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:45:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-09-13 09:45:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:45:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500371638] [2024-09-13 09:45:00,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:45:00,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911505507] [2024-09-13 09:45:00,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911505507] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:45:00,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:45:00,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2024-09-13 09:45:00,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394635251] [2024-09-13 09:45:00,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:45:00,324 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 09:45:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:45:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 09:45:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2024-09-13 09:45:00,326 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 29 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 22 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-09-13 09:45:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:45:01,301 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2024-09-13 09:45:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-13 09:45:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 22 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) Word has length 88 [2024-09-13 09:45:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:45:01,304 INFO L225 Difference]: With dead ends: 98 [2024-09-13 09:45:01,304 INFO L226 Difference]: Without dead ends: 90 [2024-09-13 09:45:01,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=409, Invalid=1753, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 09:45:01,306 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 31 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 09:45:01,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 582 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 09:45:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-13 09:45:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-09-13 09:45:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 24 states have call successors, (24), 8 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-13 09:45:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2024-09-13 09:45:01,356 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 88 [2024-09-13 09:45:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:45:01,359 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2024-09-13 09:45:01,359 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 22 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2024-09-13 09:45:01,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:45:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2024-09-13 09:45:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-13 09:45:01,361 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:45:01,361 INFO L216 NwaCegarLoop]: trace histogram [20, 19, 19, 18, 18, 18, 17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:45:01,382 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 09:45:01,568 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 [2024-09-13 09:45:01,569 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:45:01,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:45:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1935759886, now seen corresponding path program 4 times [2024-09-13 09:45:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:45:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087168485] [2024-09-13 09:45:01,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:45:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:45:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 09:45:01,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562044757] [2024-09-13 09:45:01,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:45:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:45:01,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:45:01,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:45:01,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 09:45:01,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:45:01,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:45:01,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-13 09:45:01,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:45:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 38 proven. 459 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-09-13 09:45:02,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:45:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 38 proven. 459 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-09-13 09:45:02,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:45:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087168485] [2024-09-13 09:45:02,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 09:45:02,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562044757] [2024-09-13 09:45:02,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562044757] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:45:02,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 09:45:02,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 42 [2024-09-13 09:45:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391378557] [2024-09-13 09:45:02,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 09:45:02,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-13 09:45:02,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:45:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-13 09:45:02,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2024-09-13 09:45:02,988 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 42 states, 40 states have (on average 2.125) internal successors, (85), 41 states have internal predecessors, (85), 39 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2024-09-13 09:45:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:45:04,182 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2024-09-13 09:45:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 09:45:04,183 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.125) internal successors, (85), 41 states have internal predecessors, (85), 39 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) Word has length 151 [2024-09-13 09:45:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:45:04,184 INFO L225 Difference]: With dead ends: 93 [2024-09-13 09:45:04,184 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:45:04,185 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=775, Invalid=2885, Unknown=0, NotChecked=0, Total=3660 [2024-09-13 09:45:04,186 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 09:45:04,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1227 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 09:45:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:45:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:45:04,187 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) [2024-09-13 09:45:04,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:45:04,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2024-09-13 09:45:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:45:04,188 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:45:04,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.125) internal successors, (85), 41 states have internal predecessors, (85), 39 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2024-09-13 09:45:04,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:45:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:45:04,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:45:04,192 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:45:04,205 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 09:45:04,392 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:45:04,395 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-09-13 09:45:04,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:45:05,176 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:45:05,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:45:05 BoogieIcfgContainer [2024-09-13 09:45:05,195 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:45:05,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:45:05,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:45:05,196 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:45:05,196 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:43:40" (3/4) ... [2024-09-13 09:45:05,198 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:45:05,201 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:45:05,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 09:45:05,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:45:05,202 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 09:45:05,206 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-09-13 09:45:05,206 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-13 09:45:05,206 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 09:45:05,206 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:45:05,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:45:05,280 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:45:05,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:45:05,281 INFO L158 Benchmark]: Toolchain (without parser) took 85176.31ms. Allocated memory was 182.5MB in the beginning and 230.7MB in the end (delta: 48.2MB). Free memory was 126.7MB in the beginning and 104.5MB in the end (delta: 22.2MB). Peak memory consumption was 72.5MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,281 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 134.2MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:45:05,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.82ms. Allocated memory is still 182.5MB. Free memory was 126.7MB in the beginning and 115.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.70ms. Allocated memory is still 182.5MB. Free memory was 115.1MB in the beginning and 114.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:45:05,282 INFO L158 Benchmark]: Boogie Preprocessor took 37.82ms. Allocated memory is still 182.5MB. Free memory was 114.0MB in the beginning and 112.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,282 INFO L158 Benchmark]: RCFGBuilder took 353.88ms. Allocated memory is still 182.5MB. Free memory was 112.1MB in the beginning and 99.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,282 INFO L158 Benchmark]: TraceAbstraction took 84452.68ms. Allocated memory was 182.5MB in the beginning and 230.7MB in the end (delta: 48.2MB). Free memory was 98.4MB in the beginning and 108.7MB in the end (delta: -10.3MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,282 INFO L158 Benchmark]: Witness Printer took 84.67ms. Allocated memory is still 230.7MB. Free memory was 108.7MB in the beginning and 104.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:45:05,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 134.2MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.82ms. Allocated memory is still 182.5MB. Free memory was 126.7MB in the beginning and 115.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.70ms. Allocated memory is still 182.5MB. Free memory was 115.1MB in the beginning and 114.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.82ms. Allocated memory is still 182.5MB. Free memory was 114.0MB in the beginning and 112.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 353.88ms. Allocated memory is still 182.5MB. Free memory was 112.1MB in the beginning and 99.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 84452.68ms. Allocated memory was 182.5MB in the beginning and 230.7MB in the end (delta: 48.2MB). Free memory was 98.4MB in the beginning and 108.7MB in the end (delta: -10.3MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. * Witness Printer took 84.67ms. Allocated memory is still 230.7MB. Free memory was 108.7MB in the beginning and 104.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 83.6s, OverallIterations: 7, TraceHistogramMax: 20, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 2467 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 116 IncrementalHoareTripleChecker+Unchecked, 2238 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1773 IncrementalHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 229 mSDtfsCounter, 1773 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 638 SyntacticMatches, 7 SemanticMatches, 166 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 45.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=6, InterpolantAutomatonStates: 101, 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, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 69.8s InterpolantComputationTime, 795 NumberOfCodeBlocks, 772 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 762 ConstructedInterpolants, 0 QuantifiedInterpolants, 4474 SizeOfPredicates, 12 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 2060/3280 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 <= 50) && (0 <= k)) && ((((__int128) c * 9) + ((__int128) c * y)) == (((__int128) y * 9) + ((__int128) y * y)))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * 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)))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:45:05,313 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE