./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 11:44:49,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:44:49,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:44:49,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:44:49,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:44:49,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:44:49,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:44:49,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:44:49,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:44:49,146 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:44:49,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:44:49,147 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:44:49,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:44:49,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:44:49,148 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:44:49,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:44:49,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:44:49,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:44:49,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:44:49,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:44:49,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:44:49,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:44:49,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:44:49,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:44:49,151 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:44:49,152 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:44:49,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:44:49,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:44:49,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:44:49,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:44:49,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:44:49,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:44:49,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:49,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:44:49,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:44:49,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:44:49,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:44:49,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:44:49,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:44:49,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:44:49,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:44:49,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:44:49,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:44:49,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:44:49,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:44:49,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:44:49,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:44:49,425 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:44:49,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-21 11:44:50,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:44:51,034 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:44:51,035 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-21 11:44:51,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ef98e64da/4b37cb5afea942bd87db799ec235b3eb/FLAG1153c32b0 [2024-09-21 11:44:51,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ef98e64da/4b37cb5afea942bd87db799ec235b3eb [2024-09-21 11:44:51,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:44:51,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:44:51,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:51,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:44:51,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:44:51,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f892f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51, skipping insertion in model container [2024-09-21 11:44:51,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:44:51,232 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/cohencu-ll_valuebound10.c[588,601] [2024-09-21 11:44:51,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:51,276 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:44:51,288 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/cohencu-ll_valuebound10.c[588,601] [2024-09-21 11:44:51,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:51,323 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:44:51,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51 WrapperNode [2024-09-21 11:44:51,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:51,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:51,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:44:51,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:44:51,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,350 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:44:51,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:51,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:44:51,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:44:51,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:44:51,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,387 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-21 11:44:51,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,393 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:44:51,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:44:51,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:44:51,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:44:51,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (1/1) ... [2024-09-21 11:44:51,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:51,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:51,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-21 11:44:51,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-21 11:44:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:44:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:44:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:44:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:44:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:44:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:44:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:44:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:44:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:44:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:44:51,559 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:44:51,561 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:44:51,785 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-21 11:44:51,786 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:44:51,826 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:44:51,827 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:44:51,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:51 BoogieIcfgContainer [2024-09-21 11:44:51,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:44:51,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:44:51,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:44:51,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:44:51,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:44:51" (1/3) ... [2024-09-21 11:44:51,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28794a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:51, skipping insertion in model container [2024-09-21 11:44:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:51" (2/3) ... [2024-09-21 11:44:51,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28794a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:51, skipping insertion in model container [2024-09-21 11:44:51,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:51" (3/3) ... [2024-09-21 11:44:51,845 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2024-09-21 11:44:51,862 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:44:51,862 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:44:51,919 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:44:51,929 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;@5b856ab5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:44:51,929 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:44:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-21 11:44:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-21 11:44:51,943 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:51,944 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:51,945 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:51,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1802650881, now seen corresponding path program 1 times [2024-09-21 11:44:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:51,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698919833] [2024-09-21 11:44:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:44:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698919833] [2024-09-21 11:44:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698919833] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:44:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889606456] [2024-09-21 11:44:52,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:52,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:44:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:44:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:44:52,170 INFO L87 Difference]: Start difference. First operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2024-09-21 11:44:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:52,205 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2024-09-21 11:44:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:44:52,209 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 [2024-09-21 11:44:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:52,215 INFO L225 Difference]: With dead ends: 60 [2024-09-21 11:44:52,216 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 11:44:52,219 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 [2024-09-21 11:44:52,224 INFO L434 NwaCegarLoop]: 42 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, 42 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:52,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 11:44:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-21 11:44:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-21 11:44:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-09-21 11:44:52,269 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2024-09-21 11:44:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:52,271 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-09-21 11:44:52,271 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) [2024-09-21 11:44:52,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:52,272 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-09-21 11:44:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-21 11:44:52,273 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:52,273 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:52,274 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:44:52,274 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:52,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:52,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1133972673, now seen corresponding path program 1 times [2024-09-21 11:44:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903114531] [2024-09-21 11:44:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:52,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:44:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903114531] [2024-09-21 11:44:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903114531] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:52,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:44:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743234392] [2024-09-21 11:44:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:52,547 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:44:52,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:44:52,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:44:52,549 INFO L87 Difference]: Start difference. First operand 30 states and 40 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) [2024-09-21 11:44:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:52,675 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-21 11:44:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:44:52,676 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 [2024-09-21 11:44:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:52,678 INFO L225 Difference]: With dead ends: 36 [2024-09-21 11:44:52,678 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 11:44:52,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:52,680 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:52,680 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 11:44:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-21 11:44:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-21 11:44:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-21 11:44:52,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 16 [2024-09-21 11:44:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:52,700 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-21 11:44:52,700 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) [2024-09-21 11:44:52,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-21 11:44:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 11:44:52,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:52,702 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:52,702 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 11:44:52,702 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:52,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash -295453008, now seen corresponding path program 1 times [2024-09-21 11:44:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814539542] [2024-09-21 11:44:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:52,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945449761] [2024-09-21 11:44:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:52,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:52,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:52,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:44:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:52,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:44:52,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:44:52,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:52,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814539542] [2024-09-21 11:44:52,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945449761] [2024-09-21 11:44:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945449761] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:44:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288208401] [2024-09-21 11:44:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:52,878 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:44:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:44:52,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:44:52,880 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-09-21 11:44:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:52,952 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2024-09-21 11:44:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:44:52,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 21 [2024-09-21 11:44:52,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:52,954 INFO L225 Difference]: With dead ends: 53 [2024-09-21 11:44:52,954 INFO L226 Difference]: Without dead ends: 51 [2024-09-21 11:44:52,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:52,955 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:52,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-21 11:44:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2024-09-21 11:44:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-21 11:44:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-21 11:44:52,971 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 21 [2024-09-21 11:44:52,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:52,971 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-21 11:44:52,971 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-09-21 11:44:52,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-21 11:44:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-21 11:44:52,973 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:52,973 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:52,991 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:44:53,177 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:53,178 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:53,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash 291539359, now seen corresponding path program 1 times [2024-09-21 11:44:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650321028] [2024-09-21 11:44:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360744208] [2024-09-21 11:44:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:53,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:53,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:53,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:44:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:53,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:44:53,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:53,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:53,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650321028] [2024-09-21 11:44:53,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360744208] [2024-09-21 11:44:53,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360744208] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:53,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:44:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061544875] [2024-09-21 11:44:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:53,310 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:44:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:53,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:44:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:44:53,315 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 11:44:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:53,441 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-09-21 11:44:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:44:53,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 26 [2024-09-21 11:44:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:53,444 INFO L225 Difference]: With dead ends: 57 [2024-09-21 11:44:53,446 INFO L226 Difference]: Without dead ends: 55 [2024-09-21 11:44:53,446 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:53,447 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:53,448 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-21 11:44:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-09-21 11:44:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-21 11:44:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-09-21 11:44:53,477 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 26 [2024-09-21 11:44:53,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:53,478 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-09-21 11:44:53,478 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 11:44:53,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-09-21 11:44:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 11:44:53,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:53,479 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:53,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:44:53,680 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:53,680 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:53,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1228581936, now seen corresponding path program 1 times [2024-09-21 11:44:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474133135] [2024-09-21 11:44:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596142449] [2024-09-21 11:44:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:53,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:53,711 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:44:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:53,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-21 11:44:53,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:44:53,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474133135] [2024-09-21 11:44:53,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:53,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596142449] [2024-09-21 11:44:53,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596142449] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:53,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:53,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:44:53,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516584742] [2024-09-21 11:44:53,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:53,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:44:53,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:53,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:44:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:44:53,850 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-21 11:44:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:53,956 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-09-21 11:44:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:44:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2024-09-21 11:44:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:53,958 INFO L225 Difference]: With dead ends: 65 [2024-09-21 11:44:53,959 INFO L226 Difference]: Without dead ends: 53 [2024-09-21 11:44:53,960 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:53,960 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:53,961 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-21 11:44:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-21 11:44:53,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-21 11:44:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-21 11:44:53,982 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2024-09-21 11:44:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:53,982 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-21 11:44:53,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-21 11:44:53,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-21 11:44:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-21 11:44:53,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:53,985 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:54,001 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 11:44:54,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:54,186 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:54,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash 149987423, now seen corresponding path program 1 times [2024-09-21 11:44:54,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:54,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772579721] [2024-09-21 11:44:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:54,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:54,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339714085] [2024-09-21 11:44:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:54,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:54,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:54,236 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:44:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:54,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-21 11:44:54,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 11:44:54,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 11:44:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772579721] [2024-09-21 11:44:54,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339714085] [2024-09-21 11:44:54,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339714085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:54,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-21 11:44:54,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981496396] [2024-09-21 11:44:54,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:54,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 11:44:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 11:44:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:44:54,618 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-21 11:44:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:54,873 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-09-21 11:44:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:44:54,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 48 [2024-09-21 11:44:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:54,876 INFO L225 Difference]: With dead ends: 76 [2024-09-21 11:44:54,877 INFO L226 Difference]: Without dead ends: 74 [2024-09-21 11:44:54,877 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:44:54,878 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:54,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 133 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-21 11:44:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2024-09-21 11:44:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-21 11:44:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-09-21 11:44:54,906 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 48 [2024-09-21 11:44:54,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:54,908 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-09-21 11:44:54,908 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-21 11:44:54,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-09-21 11:44:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-21 11:44:54,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:54,913 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:54,929 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:55,116 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:55,117 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:55,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash -883401392, now seen corresponding path program 2 times [2024-09-21 11:44:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:55,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038237790] [2024-09-21 11:44:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:55,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:55,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715074413] [2024-09-21 11:44:55,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:44:55,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:55,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:55,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:55,168 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:44:55,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:44:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:44:55,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-21 11:44:55,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-21 11:44:55,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-21 11:44:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038237790] [2024-09-21 11:44:55,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715074413] [2024-09-21 11:44:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715074413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:55,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-09-21 11:44:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192104870] [2024-09-21 11:44:55,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:55,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-21 11:44:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-21 11:44:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-09-21 11:44:55,575 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-21 11:44:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:55,905 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2024-09-21 11:44:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 11:44:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 53 [2024-09-21 11:44:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:55,909 INFO L225 Difference]: With dead ends: 90 [2024-09-21 11:44:55,909 INFO L226 Difference]: Without dead ends: 85 [2024-09-21 11:44:55,910 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:44:55,911 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:55,914 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-21 11:44:55,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-21 11:44:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-21 11:44:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-09-21 11:44:55,942 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 53 [2024-09-21 11:44:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:55,942 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-09-21 11:44:55,942 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-21 11:44:55,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-09-21 11:44:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-21 11:44:55,945 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:55,945 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:55,963 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:56,149 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-21 11:44:56,150 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:56,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash -612037408, now seen corresponding path program 1 times [2024-09-21 11:44:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:56,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46632230] [2024-09-21 11:44:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:56,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344248] [2024-09-21 11:44:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:56,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:56,174 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) [2024-09-21 11:44:56,177 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:44:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:56,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-21 11:44:56,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:44:56,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:44:56,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46632230] [2024-09-21 11:44:56,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344248] [2024-09-21 11:44:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344248] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:56,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:56,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-21 11:44:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119172330] [2024-09-21 11:44:56,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:56,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-21 11:44:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-21 11:44:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:44:56,814 INFO L87 Difference]: Start difference. First operand 83 states and 97 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-21 11:44:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:57,057 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-09-21 11:44:57,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:44:57,057 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 74 [2024-09-21 11:44:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:57,059 INFO L225 Difference]: With dead ends: 110 [2024-09-21 11:44:57,059 INFO L226 Difference]: Without dead ends: 108 [2024-09-21 11:44:57,059 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:44:57,060 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:57,060 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-21 11:44:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-09-21 11:44:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 57 states have internal predecessors, (58), 34 states have call successors, (34), 16 states have call predecessors, (34), 15 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-21 11:44:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2024-09-21 11:44:57,101 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 74 [2024-09-21 11:44:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:57,102 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-09-21 11:44:57,102 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-21 11:44:57,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2024-09-21 11:44:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 11:44:57,104 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:57,104 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:57,121 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-21 11:44:57,308 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:57,309 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:57,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1655042001, now seen corresponding path program 1 times [2024-09-21 11:44:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:57,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478356711] [2024-09-21 11:44:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597994944] [2024-09-21 11:44:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:57,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:57,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:57,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:44:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:57,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-21 11:44:57,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:44:57,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:44:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478356711] [2024-09-21 11:44:57,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597994944] [2024-09-21 11:44:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597994944] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:57,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:57,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2024-09-21 11:44:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682885029] [2024-09-21 11:44:57,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:57,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 11:44:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 11:44:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:44:57,933 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-21 11:44:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:58,326 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-09-21 11:44:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:44:58,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 79 [2024-09-21 11:44:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:58,332 INFO L225 Difference]: With dead ends: 122 [2024-09-21 11:44:58,332 INFO L226 Difference]: Without dead ends: 113 [2024-09-21 11:44:58,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-09-21 11:44:58,335 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:58,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 336 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-21 11:44:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-09-21 11:44:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-21 11:44:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-09-21 11:44:58,371 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 79 [2024-09-21 11:44:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:58,371 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-09-21 11:44:58,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-21 11:44:58,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-09-21 11:44:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-21 11:44:58,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:58,373 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:58,389 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-21 11:44:58,577 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:58,578 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:58,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash -875039120, now seen corresponding path program 3 times [2024-09-21 11:44:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288457186] [2024-09-21 11:44:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332664295] [2024-09-21 11:44:58,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:44:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:58,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:44:58,617 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 11:44:58,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-21 11:44:58,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:44:58,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-21 11:44:58,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-21 11:44:58,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-21 11:44:59,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288457186] [2024-09-21 11:44:59,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:59,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332664295] [2024-09-21 11:44:59,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332664295] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:59,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:59,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-21 11:44:59,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98416599] [2024-09-21 11:44:59,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:59,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 11:44:59,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:59,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 11:44:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:44:59,358 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-21 11:45:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:45:00,144 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-09-21 11:45:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:45:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 85 [2024-09-21 11:45:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:45:00,147 INFO L225 Difference]: With dead ends: 133 [2024-09-21 11:45:00,147 INFO L226 Difference]: Without dead ends: 115 [2024-09-21 11:45:00,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-09-21 11:45:00,148 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 11:45:00,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 11:45:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-21 11:45:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-21 11:45:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 27 states have call successors, (27), 20 states have call predecessors, (27), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-21 11:45:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2024-09-21 11:45:00,188 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 85 [2024-09-21 11:45:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:45:00,188 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2024-09-21 11:45:00,189 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-21 11:45:00,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2024-09-21 11:45:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-21 11:45:00,191 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:45:00,191 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:45:00,199 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-21 11:45:00,391 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:00,392 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:45:00,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2107835968, now seen corresponding path program 2 times [2024-09-21 11:45:00,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:45:00,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477007709] [2024-09-21 11:45:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:45:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:45:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:45:00,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831235159] [2024-09-21 11:45:00,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:45:00,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:00,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:45:00,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:45:00,453 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 11:45:00,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:45:00,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:45:00,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-21 11:45:00,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:45:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-09-21 11:45:00,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:45:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-09-21 11:45:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:45:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477007709] [2024-09-21 11:45:01,670 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:45:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831235159] [2024-09-21 11:45:01,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831235159] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:45:01,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:45:01,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-09-21 11:45:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506256150] [2024-09-21 11:45:01,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:45:01,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:45:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:45:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:45:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:45:01,672 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-21 11:45:02,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:45:02,190 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-09-21 11:45:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-21 11:45:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 128 [2024-09-21 11:45:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:45:02,193 INFO L225 Difference]: With dead ends: 136 [2024-09-21 11:45:02,193 INFO L226 Difference]: Without dead ends: 134 [2024-09-21 11:45:02,193 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-21 11:45:02,194 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:45:02,194 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 299 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:45:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-21 11:45:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2024-09-21 11:45:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-21 11:45:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-09-21 11:45:02,229 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 128 [2024-09-21 11:45:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:45:02,229 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-09-21 11:45:02,229 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-21 11:45:02,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-09-21 11:45:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-21 11:45:02,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:45:02,233 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:45:02,250 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-21 11:45:02,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-21 11:45:02,434 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:45:02,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1340142287, now seen corresponding path program 2 times [2024-09-21 11:45:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:45:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24893939] [2024-09-21 11:45:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:45:02,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:45:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:45:02,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286046250] [2024-09-21 11:45:02,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:45:02,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:45:02,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:45:02,465 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 11:45:02,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:45:02,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:45:02,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-21 11:45:02,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:45:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-21 11:45:03,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:45:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-21 11:45:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:45:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24893939] [2024-09-21 11:45:03,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:45:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286046250] [2024-09-21 11:45:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286046250] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:45:03,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:45:03,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-21 11:45:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714534076] [2024-09-21 11:45:03,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:45:03,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-21 11:45:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:45:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-21 11:45:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-21 11:45:03,601 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-21 11:45:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:45:04,423 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-09-21 11:45:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 11:45:04,424 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) Word has length 133 [2024-09-21 11:45:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:45:04,425 INFO L225 Difference]: With dead ends: 149 [2024-09-21 11:45:04,425 INFO L226 Difference]: Without dead ends: 145 [2024-09-21 11:45:04,426 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:45:04,426 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:45:04,427 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 464 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:45:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-21 11:45:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2024-09-21 11:45:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 27 states have call successors, (27), 22 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-21 11:45:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2024-09-21 11:45:04,461 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 133 [2024-09-21 11:45:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:45:04,462 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2024-09-21 11:45:04,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-21 11:45:04,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2024-09-21 11:45:04,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-09-21 11:45:04,464 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:45:04,464 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:45:04,481 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-21 11:45:04,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-21 11:45:04,668 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:45:04,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 127442784, now seen corresponding path program 1 times [2024-09-21 11:45:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:45:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756259066] [2024-09-21 11:45:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:45:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:45:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:45:04,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541496933] [2024-09-21 11:45:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:45:04,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:04,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:45:04,704 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:45:04,707 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 11:45:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:45:04,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-21 11:45:04,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:45:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-21 11:45:05,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:45:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-21 11:45:05,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:45:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756259066] [2024-09-21 11:45:05,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:45:05,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541496933] [2024-09-21 11:45:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541496933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:45:05,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:45:05,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-09-21 11:45:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013995663] [2024-09-21 11:45:05,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:45:05,987 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:45:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:45:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:45:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:45:05,988 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-21 11:45:10,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 11:45:15,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-21 11:45:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:45:15,119 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-09-21 11:45:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:45:15,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) Word has length 138 [2024-09-21 11:45:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:45:15,120 INFO L225 Difference]: With dead ends: 134 [2024-09-21 11:45:15,120 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:45:15,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-21 11:45:15,123 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:45:15,123 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 348 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-09-21 11:45:15,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:45:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:45:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-21 11:45:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:45:15,124 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2024-09-21 11:45:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:45:15,124 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:45:15,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-21 11:45:15,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:45:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:45:15,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:45:15,129 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:45:15,147 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-21 11:45:15,333 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:45:15,336 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-21 11:45:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:45:36,247 WARN L293 SmtUtils]: Spent 19.93s on a formula simplification. DAG size of input: 192 DAG size of output: 62 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:45:59,094 WARN L293 SmtUtils]: Spent 22.84s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:46:29,629 WARN L293 SmtUtils]: Spent 30.51s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:46:51,432 WARN L293 SmtUtils]: Spent 21.78s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:47:02,603 WARN L293 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 176 DAG size of output: 43 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:47:19,723 WARN L293 SmtUtils]: Spent 17.12s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:47:42,752 WARN L293 SmtUtils]: Spent 23.03s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:47:56,482 WARN L293 SmtUtils]: Spent 13.60s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:48:27,241 WARN L293 SmtUtils]: Spent 30.76s on a formula simplification. DAG size of input: 177 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:48:53,456 WARN L293 SmtUtils]: Spent 26.20s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:49:11,089 WARN L293 SmtUtils]: Spent 17.60s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-21 11:49:11,098 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:49:11,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:49:11 BoogieIcfgContainer [2024-09-21 11:49:11,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:49:11,120 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:49:11,121 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:49:11,121 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:49:11,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:51" (3/4) ... [2024-09-21 11:49:11,123 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:49:11,176 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:49:11,176 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:49:11,177 INFO L158 Benchmark]: Toolchain (without parser) took 260120.11ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 116.7MB in the beginning and 88.9MB in the end (delta: 27.8MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,177 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:49:11,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.23ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 104.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.12ms. Allocated memory is still 155.2MB. Free memory was 104.6MB in the beginning and 103.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,178 INFO L158 Benchmark]: Boogie Preprocessor took 49.97ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 101.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,178 INFO L158 Benchmark]: RCFGBuilder took 425.76ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 124.1MB in the end (delta: -22.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,179 INFO L158 Benchmark]: TraceAbstraction took 259285.78ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 123.7MB in the beginning and 91.0MB in the end (delta: 32.7MB). Peak memory consumption was 136.7MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,179 INFO L158 Benchmark]: Witness Printer took 56.06ms. Allocated memory is still 224.4MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:49:11,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.23ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 104.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.12ms. Allocated memory is still 155.2MB. Free memory was 104.6MB in the beginning and 103.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.97ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 101.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.76ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 124.1MB in the end (delta: -22.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 259285.78ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 123.7MB in the beginning and 91.0MB in the end (delta: 32.7MB). Peak memory consumption was 136.7MB. Max. memory is 16.1GB. * Witness Printer took 56.06ms. Allocated memory is still 224.4MB. Free memory was 91.0MB in the beginning and 88.9MB 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: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.4s, OverallIterations: 13, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 2817 SdHoareTripleChecker+Invalid, 11.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2343 mSDsCounter, 374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2136 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 374 mSolverCounterUnsat, 474 mSDtfsCounter, 2136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1438 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1664 NumberOfCodeBlocks, 1624 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1565 ConstructedInterpolants, 0 QuantifiedInterpolants, 7574 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1799 ConjunctsInSsa, 272 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 7706/8248 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: 33]: Loop Invariant Derived loop invariant: ((((((((((((__int128) 7 * z) + ((__int128) y * 46)) + (((__int128) z * x) * 3)) + ((__int128) x * 36)) == ((((2 * ((__int128) y * y)) + (((__int128) z * z) * 2)) + 8) + ((__int128) z * y))) && ((((((__int128) x * 18) + (((__int128) z * x) * 3)) + ((__int128) y * 10)) + 10) == ((2 * ((__int128) y * y)) + ((__int128) z * 3)))) && ((((__int128) n * 6) + 6) == z)) && (0 <= a)) && (((((2 * ((__int128) y * y)) + (((__int128) z * z) * 5)) + 38) + (2 * ((__int128) z * y))) == (((((__int128) 23 * z) + (((__int128) z * x) * 3)) + ((__int128) x * 54)) + ((__int128) 94 * y)))) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) && (a <= 10)) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-21 11:49:11,219 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