./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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/recursified_loop-simple/recursified_nested_1.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 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:50:33,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:50:33,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:50:33,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:50:33,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:50:33,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:50:33,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:50:33,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:50:33,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:50:33,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:50:33,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:50:33,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:50:33,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:50:33,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:50:33,419 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:50:33,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:50:33,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:50:33,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:50:33,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:50:33,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:50:33,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:50:33,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:50:33,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:50:33,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:50:33,423 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:50:33,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:50:33,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:50:33,424 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:50:33,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:50:33,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:50:33,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:50:33,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:50:33,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:50:33,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:50:33,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:50:33,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:50:33,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:50:33,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:50:33,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:50:33,427 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:50:33,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:50:33,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:50:33,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:50:33,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:50:33,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:50:33,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:50:33,720 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:50:33,721 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:50:33,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-09-15 19:50:34,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:50:35,095 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:50:35,096 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-09-15 19:50:35,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/6f5f7fcce/053b49387eba480781a4c0fe0f1de3f3/FLAG21219caf7 [2024-09-15 19:50:35,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/6f5f7fcce/053b49387eba480781a4c0fe0f1de3f3 [2024-09-15 19:50:35,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:50:35,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:50:35,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:50:35,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:50:35,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:50:35,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1291a75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35, skipping insertion in model container [2024-09-15 19:50:35,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,143 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:50:35,257 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/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-09-15 19:50:35,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:50:35,272 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:50:35,281 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/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-09-15 19:50:35,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:50:35,296 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:50:35,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35 WrapperNode [2024-09-15 19:50:35,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:50:35,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:50:35,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:50:35,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:50:35,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,314 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:50:35,314 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:50:35,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:50:35,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:50:35,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:50:35,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,335 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-09-15 19:50:35,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:50:35,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:50:35,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:50:35,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:50:35,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (1/1) ... [2024-09-15 19:50:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:50:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:35,417 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) [2024-09-15 19:50:35,422 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 [2024-09-15 19:50:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 19:50:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-15 19:50:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:50:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:50:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:50:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-09-15 19:50:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-09-15 19:50:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:50:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:50:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 19:50:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-15 19:50:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:50:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:50:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:50:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 19:50:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-15 19:50:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-15 19:50:35,508 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:50:35,510 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:50:35,605 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-09-15 19:50:35,605 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:50:35,628 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:50:35,629 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 19:50:35,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:35 BoogieIcfgContainer [2024-09-15 19:50:35,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:50:35,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:50:35,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:50:35,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:50:35,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:50:35" (1/3) ... [2024-09-15 19:50:35,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e7df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:50:35, skipping insertion in model container [2024-09-15 19:50:35,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:50:35" (2/3) ... [2024-09-15 19:50:35,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e7df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:50:35, skipping insertion in model container [2024-09-15 19:50:35,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:35" (3/3) ... [2024-09-15 19:50:35,637 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-09-15 19:50:35,649 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:50:35,650 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:50:35,693 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:50:35,699 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;@41164163, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:50:35,699 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:50:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-15 19:50:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 19:50:35,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:35,708 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:35,708 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash 640195126, now seen corresponding path program 1 times [2024-09-15 19:50:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997444696] [2024-09-15 19:50:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:50:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997444696] [2024-09-15 19:50:36,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997444696] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:50:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:50:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 19:50:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974808132] [2024-09-15 19:50:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:50:36,127 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 19:50:36,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 19:50:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-15 19:50:36,147 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:50:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:36,245 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-09-15 19:50:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 19:50:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-15 19:50:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:36,253 INFO L225 Difference]: With dead ends: 29 [2024-09-15 19:50:36,253 INFO L226 Difference]: Without dead ends: 17 [2024-09-15 19:50:36,255 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-15 19:50:36,257 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:36,260 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 19:50:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-15 19:50:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-15 19:50:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-15 19:50:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-15 19:50:36,289 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2024-09-15 19:50:36,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:36,289 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-15 19:50:36,289 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:50:36,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:36,292 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-15 19:50:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-15 19:50:36,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:36,293 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:36,293 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:50:36,294 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1526075367, now seen corresponding path program 1 times [2024-09-15 19:50:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:36,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377934167] [2024-09-15 19:50:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:50:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:36,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377934167] [2024-09-15 19:50:36,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377934167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:36,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046454144] [2024-09-15 19:50:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:36,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:36,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:36,699 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) [2024-09-15 19:50:36,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:50:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:36,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-15 19:50:36,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:36,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-15 19:50:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 19:50:36,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:50:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046454144] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:37,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-09-15 19:50:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122521231] [2024-09-15 19:50:37,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:37,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 19:50:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 19:50:37,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-09-15 19:50:37,324 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 19:50:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:37,520 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-15 19:50:37,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-15 19:50:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Word has length 18 [2024-09-15 19:50:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:37,521 INFO L225 Difference]: With dead ends: 25 [2024-09-15 19:50:37,522 INFO L226 Difference]: Without dead ends: 21 [2024-09-15 19:50:37,522 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-09-15 19:50:37,523 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:37,524 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:50:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-15 19:50:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-15 19:50:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-15 19:50:37,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-15 19:50:37,531 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-09-15 19:50:37,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:37,531 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-15 19:50:37,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-15 19:50:37,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:37,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-15 19:50:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-15 19:50:37,533 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:37,533 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:37,546 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:50:37,733 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:37,734 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:37,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1370930293, now seen corresponding path program 2 times [2024-09-15 19:50:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366974505] [2024-09-15 19:50:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:37,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:37,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:37,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:38,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:38,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:38,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-15 19:50:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366974505] [2024-09-15 19:50:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366974505] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325625724] [2024-09-15 19:50:38,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:50:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:38,348 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) [2024-09-15 19:50:38,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:50:38,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:50:38,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:38,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-15 19:50:38,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:38,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-15 19:50:38,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-15 19:50:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 19:50:38,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:39,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-09-15 19:50:51,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325625724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:51,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:50:51,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-15 19:50:51,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900875254] [2024-09-15 19:50:51,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:51,400 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-15 19:50:51,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:51,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-15 19:50:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=640, Unknown=3, NotChecked=0, Total=756 [2024-09-15 19:50:51,403 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-15 19:50:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:51,606 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-15 19:50:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-15 19:50:51,607 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) Word has length 28 [2024-09-15 19:50:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:51,608 INFO L225 Difference]: With dead ends: 29 [2024-09-15 19:50:51,608 INFO L226 Difference]: Without dead ends: 25 [2024-09-15 19:50:51,608 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=169, Invalid=950, Unknown=3, NotChecked=0, Total=1122 [2024-09-15 19:50:51,609 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:51,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:50:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-15 19:50:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-15 19:50:51,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-15 19:50:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-15 19:50:51,618 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 28 [2024-09-15 19:50:51,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:51,619 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-15 19:50:51,619 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-15 19:50:51,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:51,619 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-15 19:50:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-15 19:50:51,620 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:51,620 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:51,634 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:50:51,821 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:51,821 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:51,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash -812892675, now seen corresponding path program 3 times [2024-09-15 19:50:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:51,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363190403] [2024-09-15 19:50:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:51,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-15 19:50:52,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363190403] [2024-09-15 19:50:52,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363190403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:52,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647543847] [2024-09-15 19:50:52,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:50:52,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:52,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:52,689 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) [2024-09-15 19:50:52,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:50:52,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-15 19:50:52,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:52,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-15 19:50:52,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:52,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-15 19:50:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-15 19:50:53,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:50:54,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647543847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:50:54,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:50:54,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 26] total 44 [2024-09-15 19:50:54,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255808327] [2024-09-15 19:50:54,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:54,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-15 19:50:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:54,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-15 19:50:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1540, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 19:50:54,451 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-09-15 19:50:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:54,751 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-15 19:50:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 19:50:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) Word has length 38 [2024-09-15 19:50:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:54,752 INFO L225 Difference]: With dead ends: 31 [2024-09-15 19:50:54,752 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 19:50:54,753 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=481, Invalid=2069, Unknown=0, NotChecked=0, Total=2550 [2024-09-15 19:50:54,754 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:54,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 135 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:50:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 19:50:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 19:50:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-15 19:50:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-15 19:50:54,759 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 38 [2024-09-15 19:50:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:54,759 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-15 19:50:54,759 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-09-15 19:50:54,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-15 19:50:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-15 19:50:54,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:50:54,760 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:50:54,773 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:50:54,964 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:54,965 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:50:54,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:54,965 INFO L85 PathProgramCache]: Analyzing trace with hash -715334516, now seen corresponding path program 4 times [2024-09-15 19:50:54,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:50:54,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638450316] [2024-09-15 19:50:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:50:54,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:50:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:50:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:50:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 19:50:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:50:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-15 19:50:55,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:50:55,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638450316] [2024-09-15 19:50:55,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638450316] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203722526] [2024-09-15 19:50:55,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 19:50:55,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:55,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:50:55,482 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) [2024-09-15 19:50:55,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:50:55,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 19:50:55,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:50:55,549 WARN L260 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-15 19:50:55,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:50:55,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-15 19:50:55,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-15 19:50:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 5 proven. 53 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-15 19:50:55,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:50:56,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-09-15 19:50:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203722526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:50:56,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-15 19:50:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-15 19:50:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120451664] [2024-09-15 19:50:56,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-15 19:50:56,831 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-15 19:50:56,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:50:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-15 19:50:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-09-15 19:50:56,832 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-15 19:50:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:50:57,169 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-15 19:50:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 19:50:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) Word has length 43 [2024-09-15 19:50:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:50:57,170 INFO L225 Difference]: With dead ends: 29 [2024-09-15 19:50:57,170 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:50:57,170 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 19:50:57,171 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:50:57,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:50:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:50:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:50:57,171 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) [2024-09-15 19:50:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:50:57,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-09-15 19:50:57,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:50:57,172 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:50:57,172 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-15 19:50:57,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:50:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:50:57,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:50:57,174 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:50:57,186 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:50:57,378 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:50:57,381 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1] [2024-09-15 19:50:57,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:50:57,650 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:50:57,661 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-15 19:50:57,662 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-15 19:50:57,662 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-15 19:50:57,662 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-15 19:50:57,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:50:57 BoogieIcfgContainer [2024-09-15 19:50:57,663 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:50:57,664 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:50:57,664 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:50:57,664 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:50:57,664 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:50:35" (3/4) ... [2024-09-15 19:50:57,666 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:50:57,668 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:50:57,668 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_19_to_19_0 [2024-09-15 19:50:57,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:50:57,672 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-15 19:50:57,672 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-15 19:50:57,674 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:50:57,674 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:50:57,736 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:50:57,737 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:50:57,737 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:50:57,737 INFO L158 Benchmark]: Toolchain (without parser) took 22617.29ms. Allocated memory was 65.0MB in the beginning and 159.4MB in the end (delta: 94.4MB). Free memory was 42.2MB in the beginning and 118.6MB in the end (delta: -76.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,738 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 65.0MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:50:57,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 175.87ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 31.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.79ms. Allocated memory is still 65.0MB. Free memory was 31.2MB in the beginning and 30.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:50:57,739 INFO L158 Benchmark]: Boogie Preprocessor took 31.77ms. Allocated memory is still 65.0MB. Free memory was 30.2MB in the beginning and 28.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,739 INFO L158 Benchmark]: RCFGBuilder took 282.25ms. Allocated memory was 65.0MB in the beginning and 90.2MB in the end (delta: 25.2MB). Free memory was 28.5MB in the beginning and 60.1MB in the end (delta: -31.6MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,739 INFO L158 Benchmark]: TraceAbstraction took 22033.03ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 59.1MB in the beginning and 122.8MB in the end (delta: -63.7MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,739 INFO L158 Benchmark]: Witness Printer took 73.03ms. Allocated memory is still 159.4MB. Free memory was 122.8MB in the beginning and 118.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 19:50:57,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 65.0MB. Free memory was 41.6MB in the beginning and 41.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 175.87ms. Allocated memory is still 65.0MB. Free memory was 42.0MB in the beginning and 31.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.79ms. Allocated memory is still 65.0MB. Free memory was 31.2MB in the beginning and 30.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.77ms. Allocated memory is still 65.0MB. Free memory was 30.2MB in the beginning and 28.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 282.25ms. Allocated memory was 65.0MB in the beginning and 90.2MB in the end (delta: 25.2MB). Free memory was 28.5MB in the beginning and 60.1MB in the end (delta: -31.6MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * TraceAbstraction took 22033.03ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 59.1MB in the beginning and 122.8MB in the end (delta: -63.7MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. * Witness Printer took 73.03ms. Allocated memory is still 159.4MB. Free memory was 122.8MB in the beginning and 118.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] * 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: 48]: 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 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.7s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 434 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 807 IncrementalHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 64 mSDtfsCounter, 807 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 267 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 2958 SizeOfPredicates, 44 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 235/474 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 RESULT: Ultimate proved your program to be correct! [2024-09-15 19:50:57,763 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE