./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd 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/ps4-ll_valuebound100.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 787aa3251fe70c0757344936f9e5c92841f1fb61138cb758df556e9684a50783 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:43:48,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:43:48,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:43:48,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:43:48,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:43:48,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:43:48,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:43:48,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:43:48,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:43:48,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:43:48,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:43:48,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:43:48,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:43:48,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:43:48,875 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:43:48,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:43:48,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:43:48,878 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:43:48,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:43:48,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:43:48,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:43:48,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:43:48,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:43:48,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:43:48,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:43:48,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:43:48,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:43:48,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:43:48,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:43:48,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:43:48,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:43:48,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:43:48,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:43:48,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:43:48,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:43:48,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:43:48,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:43:48,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:43:48,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:43:48,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:43:48,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:43:48,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:43:48,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 787aa3251fe70c0757344936f9e5c92841f1fb61138cb758df556e9684a50783 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:43:49,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:43:49,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:43:49,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:43:49,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:43:49,094 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:43:49,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c [2024-09-20 19:43:50,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:43:50,553 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:43:50,554 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c [2024-09-20 19:43:50,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9e5d5dcbe/0c1eab3aa85a4d7b9082dc21511c8533/FLAG55c63f03f [2024-09-20 19:43:50,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9e5d5dcbe/0c1eab3aa85a4d7b9082dc21511c8533 [2024-09-20 19:43:50,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:43:50,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:43:50,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:43:50,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:43:50,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:43:50,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:43:50" (1/1) ... [2024-09-20 19:43:50,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22212b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:50, skipping insertion in model container [2024-09-20 19:43:50,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:43:50" (1/1) ... [2024-09-20 19:43:51,001 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:43:51,119 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c[458,471] [2024-09-20 19:43:51,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:43:51,149 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:43:51,169 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c[458,471] [2024-09-20 19:43:51,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:43:51,196 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:43:51,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51 WrapperNode [2024-09-20 19:43:51,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:43:51,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:43:51,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:43:51,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:43:51,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,223 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:43:51,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:43:51,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:43:51,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:43:51,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:43:51,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,256 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 19:43:51,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:43:51,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:43:51,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:43:51,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:43:51,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (1/1) ... [2024-09-20 19:43:51,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:43:51,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:43:51,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:43:51,311 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:43:51,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:43:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:43:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:43:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:43:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:43:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:43:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:43:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:43:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:43:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:43:51,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:43:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:43:51,398 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:43:51,399 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:43:51,518 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-20 19:43:51,519 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:43:51,539 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:43:51,540 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:43:51,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:43:51 BoogieIcfgContainer [2024-09-20 19:43:51,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:43:51,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:43:51,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:43:51,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:43:51,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:43:50" (1/3) ... [2024-09-20 19:43:51,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17659d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:43:51, skipping insertion in model container [2024-09-20 19:43:51,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:43:51" (2/3) ... [2024-09-20 19:43:51,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17659d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:43:51, skipping insertion in model container [2024-09-20 19:43:51,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:43:51" (3/3) ... [2024-09-20 19:43:51,550 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound100.c [2024-09-20 19:43:51,563 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:43:51,563 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:43:51,616 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:43:51,629 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;@24db93dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:43:51,629 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:43:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:43:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:43:51,640 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:43:51,641 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:43:51,641 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:43:51,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1238311395, now seen corresponding path program 1 times [2024-09-20 19:43:51,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:43:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077219752] [2024-09-20 19:43:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:51,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:43:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:51,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:43:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:51,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:43:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:43:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:43:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077219752] [2024-09-20 19:43:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077219752] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:43:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:43:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:43:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284100557] [2024-09-20 19:43:51,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:43:51,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:43:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:43:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:43:51,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:43:51,843 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:43:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:43:51,865 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-09-20 19:43:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:43:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:43:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:43:51,873 INFO L225 Difference]: With dead ends: 44 [2024-09-20 19:43:51,873 INFO L226 Difference]: Without dead ends: 22 [2024-09-20 19:43:51,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:43:51,878 INFO L434 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:43:51,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:43:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-20 19:43:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-20 19:43:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 19:43:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-20 19:43:51,911 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2024-09-20 19:43:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:43:51,911 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-20 19:43:51,912 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, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:43:51,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-20 19:43:51,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:43:51,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:43:51,914 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:43:51,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:43:51,915 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:43:51,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1910922015, now seen corresponding path program 1 times [2024-09-20 19:43:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:43:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653225778] [2024-09-20 19:43:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:43:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:43:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266835689] [2024-09-20 19:43:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:51,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:43:51,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:43:51,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:43:51,943 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:43:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:51,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:43:51,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:43:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:43:52,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:43:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:43:52,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653225778] [2024-09-20 19:43:52,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:43:52,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266835689] [2024-09-20 19:43:52,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266835689] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:43:52,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:43:52,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:43:52,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206792463] [2024-09-20 19:43:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:43:52,057 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:43:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:43:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:43:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:43:52,058 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:43:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:43:52,111 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-20 19:43:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:43:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:43:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:43:52,112 INFO L225 Difference]: With dead ends: 33 [2024-09-20 19:43:52,112 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:43:52,113 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:43:52,113 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 69 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 [2024-09-20 19:43:52,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:43:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:43:52,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-20 19:43:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:43:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2024-09-20 19:43:52,126 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2024-09-20 19:43:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:43:52,127 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2024-09-20 19:43:52,127 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:43:52,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2024-09-20 19:43:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 19:43:52,128 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:43:52,128 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:43:52,143 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:43:52,328 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 [2024-09-20 19:43:52,329 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:43:52,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash 306700420, now seen corresponding path program 1 times [2024-09-20 19:43:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:43:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659964493] [2024-09-20 19:43:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:43:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:43:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063948324] [2024-09-20 19:43:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:52,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:43:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:43:52,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:43:52,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:43:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:52,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 19:43:52,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:43:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:43:52,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:43:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 19:43:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:43:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659964493] [2024-09-20 19:43:52,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:43:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063948324] [2024-09-20 19:43:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063948324] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:43:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:43:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 19:43:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221699670] [2024-09-20 19:43:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:43:52,597 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:43:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:43:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:43:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:43:52,598 INFO L87 Difference]: Start difference. First operand 29 states and 31 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:43:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:43:52,628 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-09-20 19:43:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:43:52,628 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-20 19:43:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:43:52,629 INFO L225 Difference]: With dead ends: 35 [2024-09-20 19:43:52,629 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 19:43:52,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:43:52,630 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:43:52,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:43:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 19:43:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-20 19:43:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 19:43:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-09-20 19:43:52,637 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2024-09-20 19:43:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:43:52,637 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-09-20 19:43:52,637 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:43:52,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-09-20 19:43:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 19:43:52,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:43:52,639 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:43:52,652 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:43:52,842 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 [2024-09-20 19:43:52,844 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:43:52,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:52,844 INFO L85 PathProgramCache]: Analyzing trace with hash 749725687, now seen corresponding path program 1 times [2024-09-20 19:43:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:43:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617982004] [2024-09-20 19:43:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:43:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:43:52,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71443547] [2024-09-20 19:43:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:52,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:43:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:43:52,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:43:52,889 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:43:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:43:52,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 19:43:52,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:43:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:43:53,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:43:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:43:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:43:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617982004] [2024-09-20 19:43:53,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:43:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71443547] [2024-09-20 19:43:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71443547] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:43:53,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:43:53,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-20 19:43:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366962720] [2024-09-20 19:43:53,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:43:53,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 19:43:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:43:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 19:43:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-20 19:43:53,110 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-20 19:43:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:43:53,217 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-09-20 19:43:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 19:43:53,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2024-09-20 19:43:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:43:53,219 INFO L225 Difference]: With dead ends: 45 [2024-09-20 19:43:53,220 INFO L226 Difference]: Without dead ends: 39 [2024-09-20 19:43:53,220 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-20 19:43:53,221 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:43:53,222 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 98 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:43:53,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-20 19:43:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-20 19:43:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 19:43:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-20 19:43:53,244 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2024-09-20 19:43:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:43:53,244 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-20 19:43:53,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-20 19:43:53,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-20 19:43:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-20 19:43:53,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:43:53,246 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:43:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 19:43:53,451 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 [2024-09-20 19:43:53,452 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:43:53,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash 608187154, now seen corresponding path program 2 times [2024-09-20 19:43:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:43:53,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972293651] [2024-09-20 19:43:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:43:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:43:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:43:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267150093] [2024-09-20 19:43:53,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:43:53,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:43:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:43:53,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:43:53,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:43:53,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:43:53,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:43:53,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 19:43:53,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:43:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 19:43:53,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:43:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 19:43:54,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:43:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972293651] [2024-09-20 19:43:54,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:43:54,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267150093] [2024-09-20 19:43:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267150093] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:43:54,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:43:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-20 19:43:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655441339] [2024-09-20 19:43:54,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:43:54,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 19:43:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:43:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 19:43:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-20 19:43:54,045 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-20 19:43:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:43:54,302 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-09-20 19:43:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 19:43:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 50 [2024-09-20 19:43:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:43:54,303 INFO L225 Difference]: With dead ends: 43 [2024-09-20 19:43:54,303 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:43:54,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-20 19:43:54,304 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:43:54,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 262 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:43:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:43:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:43:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 19:43:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:43:54,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-09-20 19:43:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:43:54,305 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:43:54,305 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-20 19:43:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:43:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:43:54,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:43:54,308 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:43:54,326 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 19:43:54,508 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 [2024-09-20 19:43:54,511 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-20 19:43:54,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:43:54,777 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:43:54,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:43:54 BoogieIcfgContainer [2024-09-20 19:43:54,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:43:54,800 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:43:54,800 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:43:54,800 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:43:54,801 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:43:51" (3/4) ... [2024-09-20 19:43:54,802 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:43:54,840 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:43:54,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:43:54,841 INFO L158 Benchmark]: Toolchain (without parser) took 3865.35ms. Allocated memory was 163.6MB in the beginning and 243.3MB in the end (delta: 79.7MB). Free memory was 91.6MB in the beginning and 185.1MB in the end (delta: -93.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:43:54,841 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory was 115.0MB in the beginning and 114.7MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:43:54,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.62ms. Allocated memory is still 163.6MB. Free memory was 91.4MB in the beginning and 79.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:43:54,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.47ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 78.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:43:54,842 INFO L158 Benchmark]: Boogie Preprocessor took 43.08ms. Allocated memory is still 163.6MB. Free memory was 78.8MB in the beginning and 77.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:43:54,842 INFO L158 Benchmark]: RCFGBuilder took 273.16ms. Allocated memory is still 163.6MB. Free memory was 77.2MB in the beginning and 64.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:43:54,843 INFO L158 Benchmark]: TraceAbstraction took 3252.64ms. Allocated memory was 163.6MB in the beginning and 243.3MB in the end (delta: 79.7MB). Free memory was 63.7MB in the beginning and 187.2MB in the end (delta: -123.5MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2024-09-20 19:43:54,843 INFO L158 Benchmark]: Witness Printer took 40.54ms. Allocated memory is still 243.3MB. Free memory was 187.2MB in the beginning and 185.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 19:43:54,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory was 115.0MB in the beginning and 114.7MB in the end (delta: 241.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.62ms. Allocated memory is still 163.6MB. Free memory was 91.4MB in the beginning and 79.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.47ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 78.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.08ms. Allocated memory is still 163.6MB. Free memory was 78.8MB in the beginning and 77.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.16ms. Allocated memory is still 163.6MB. Free memory was 77.2MB in the beginning and 64.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3252.64ms. Allocated memory was 163.6MB in the beginning and 243.3MB in the end (delta: 79.7MB). Free memory was 63.7MB in the beginning and 187.2MB in the end (delta: -123.5MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. * Witness Printer took 40.54ms. Allocated memory is still 243.3MB. Free memory was 187.2MB in the beginning and 185.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 523 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 416 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 294 IncrementalHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 107 mSDtfsCounter, 294 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 SizeOfPredicates, 7 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 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: 27]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - 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! [2024-09-20 19:43:54,856 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE