./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.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 de325976 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/recursive/Primes.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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --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-de32597-m [2024-09-18 16:37:15,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:37:15,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:37:15,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:37:15,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:37:15,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:37:15,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:37:15,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:37:15,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:37:15,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:37:15,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:37:15,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:37:15,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:37:15,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:37:15,625 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:37:15,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:37:15,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:37:15,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:37:15,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:37:15,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:37:15,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:37:15,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:37:15,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:37:15,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:37:15,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:37:15,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:37:15,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:37:15,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:37:15,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:37:15,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:37:15,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:37:15,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:37:15,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:37:15,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:37:15,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:37:15,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:37:15,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:37:15,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:37:15,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:37:15,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:37:15,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:37:15,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:37:15,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:37:15,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:37:15,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:37:15,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:37:15,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:37:15,889 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:37:15,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Primes.c [2024-09-18 16:37:17,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:37:17,287 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:37:17,288 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Primes.c [2024-09-18 16:37:17,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/359d8934e/1c2fd9963dc54425943a14564708c81f/FLAGe12403cf6 [2024-09-18 16:37:17,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/359d8934e/1c2fd9963dc54425943a14564708c81f [2024-09-18 16:37:17,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:37:17,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:37:17,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:37:17,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:37:17,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:37:17,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e4184c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17, skipping insertion in model container [2024-09-18 16:37:17,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:37:17,496 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/recursive/Primes.c[2190,2203] [2024-09-18 16:37:17,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:37:17,505 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:37:17,518 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/recursive/Primes.c[2190,2203] [2024-09-18 16:37:17,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:37:17,529 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:37:17,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17 WrapperNode [2024-09-18 16:37:17,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:37:17,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:37:17,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:37:17,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:37:17,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,544 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:37:17,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:37:17,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:37:17,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:37:17,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:37:17,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,562 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]. [2024-09-18 16:37:17,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:37:17,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:37:17,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:37:17,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:37:17,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (1/1) ... [2024-09-18 16:37:17,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:37:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:17,602 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) [2024-09-18 16:37:17,604 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 [2024-09-18 16:37:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2024-09-18 16:37:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2024-09-18 16:37:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:37:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2024-09-18 16:37:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2024-09-18 16:37:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2024-09-18 16:37:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2024-09-18 16:37:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:37:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:37:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:37:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime [2024-09-18 16:37:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime [2024-09-18 16:37:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:37:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:37:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:37:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:37:17,684 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:37:17,685 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:37:17,823 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-09-18 16:37:17,824 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:37:17,839 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:37:17,839 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:37:17,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:37:17 BoogieIcfgContainer [2024-09-18 16:37:17,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:37:17,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:37:17,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:37:17,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:37:17,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:37:17" (1/3) ... [2024-09-18 16:37:17,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ce394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:37:17, skipping insertion in model container [2024-09-18 16:37:17,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:37:17" (2/3) ... [2024-09-18 16:37:17,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6ce394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:37:17, skipping insertion in model container [2024-09-18 16:37:17,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:37:17" (3/3) ... [2024-09-18 16:37:17,845 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2024-09-18 16:37:17,857 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:37:17,857 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:37:17,893 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:37:17,898 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;@67a1e78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:37:17,898 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:37:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-18 16:37:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-18 16:37:17,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:17,907 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:17,908 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:17,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash 745641163, now seen corresponding path program 1 times [2024-09-18 16:37:17,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:17,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354825897] [2024-09-18 16:37:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:17,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:37:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:18,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354825897] [2024-09-18 16:37:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354825897] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:18,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-18 16:37:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598067906] [2024-09-18 16:37:18,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:18,062 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-18 16:37:18,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-18 16:37:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 16:37:18,079 INFO L87 Difference]: Start difference. First operand has 59 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 40 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 16:37:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:18,111 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2024-09-18 16:37:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-18 16:37:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-18 16:37:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:18,118 INFO L225 Difference]: With dead ends: 66 [2024-09-18 16:37:18,119 INFO L226 Difference]: Without dead ends: 55 [2024-09-18 16:37:18,121 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-18 16:37:18,123 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:18,123 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-18 16:37:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-09-18 16:37:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-18 16:37:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-09-18 16:37:18,208 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 21 [2024-09-18 16:37:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:18,213 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-09-18 16:37:18,213 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-18 16:37:18,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,215 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-09-18 16:37:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-18 16:37:18,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:18,217 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:18,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:37:18,217 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:18,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1491686554, now seen corresponding path program 1 times [2024-09-18 16:37:18,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937540712] [2024-09-18 16:37:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-18 16:37:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:37:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937540712] [2024-09-18 16:37:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937540712] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:18,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-18 16:37:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494945483] [2024-09-18 16:37:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:18,515 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-18 16:37:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-18 16:37:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:37:18,516 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:37:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:18,565 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2024-09-18 16:37:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 16:37:18,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-18 16:37:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:18,570 INFO L225 Difference]: With dead ends: 78 [2024-09-18 16:37:18,570 INFO L226 Difference]: Without dead ends: 57 [2024-09-18 16:37:18,571 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:37:18,572 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:18,572 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 468 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-18 16:37:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-18 16:37:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 39 states have internal predecessors, (50), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-18 16:37:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-09-18 16:37:18,582 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 28 [2024-09-18 16:37:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:18,582 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-09-18 16:37:18,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:37:18,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-09-18 16:37:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-18 16:37:18,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:18,584 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:18,584 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 16:37:18,584 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:18,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1689656639, now seen corresponding path program 1 times [2024-09-18 16:37:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207239141] [2024-09-18 16:37:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-18 16:37:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:37:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207239141] [2024-09-18 16:37:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207239141] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-18 16:37:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251774590] [2024-09-18 16:37:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:18,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-18 16:37:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-18 16:37:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:37:18,728 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:37:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:18,760 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-09-18 16:37:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:18,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-18 16:37:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:18,762 INFO L225 Difference]: With dead ends: 63 [2024-09-18 16:37:18,762 INFO L226 Difference]: Without dead ends: 59 [2024-09-18 16:37:18,762 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:37:18,763 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:18,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 265 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-18 16:37:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-18 16:37:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-18 16:37:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-18 16:37:18,770 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 29 [2024-09-18 16:37:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:18,770 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-18 16:37:18,770 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-18 16:37:18,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-18 16:37:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-18 16:37:18,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:18,772 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:18,772 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 16:37:18,772 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:18,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -145981177, now seen corresponding path program 1 times [2024-09-18 16:37:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451528232] [2024-09-18 16:37:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-18 16:37:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:37:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451528232] [2024-09-18 16:37:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451528232] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:37:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600553193] [2024-09-18 16:37:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:18,868 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:37:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:37:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:37:18,869 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:37:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:18,940 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2024-09-18 16:37:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:18,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-09-18 16:37:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:18,945 INFO L225 Difference]: With dead ends: 67 [2024-09-18 16:37:18,946 INFO L226 Difference]: Without dead ends: 63 [2024-09-18 16:37:18,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:37:18,947 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:18,947 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 230 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-18 16:37:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-09-18 16:37:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 41 states have internal predecessors, (51), 12 states have call successors, (12), 6 states have call predecessors, (12), 7 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-18 16:37:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-09-18 16:37:18,963 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 30 [2024-09-18 16:37:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:18,963 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-09-18 16:37:18,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-18 16:37:18,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-09-18 16:37:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-18 16:37:18,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:18,968 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:18,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-18 16:37:18,968 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:18,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:18,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1109477137, now seen corresponding path program 1 times [2024-09-18 16:37:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:18,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106228434] [2024-09-18 16:37:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-18 16:37:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:37:19,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:19,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106228434] [2024-09-18 16:37:19,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106228434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:19,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560686834] [2024-09-18 16:37:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:19,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:19,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:19,057 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) [2024-09-18 16:37:19,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:37:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 16:37:19,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-18 16:37:19,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:37:19,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560686834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:19,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-18 16:37:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019954292] [2024-09-18 16:37:19,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:19,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-18 16:37:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:19,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-18 16:37:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-09-18 16:37:19,398 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 16:37:19,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:19,495 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2024-09-18 16:37:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 16:37:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2024-09-18 16:37:19,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:19,496 INFO L225 Difference]: With dead ends: 76 [2024-09-18 16:37:19,496 INFO L226 Difference]: Without dead ends: 57 [2024-09-18 16:37:19,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-09-18 16:37:19,497 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 26 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:19,497 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 458 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:19,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-18 16:37:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-18 16:37:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.263157894736842) internal successors, (48), 40 states have internal predecessors, (48), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-18 16:37:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2024-09-18 16:37:19,503 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 37 [2024-09-18 16:37:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:19,504 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2024-09-18 16:37:19,504 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-18 16:37:19,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2024-09-18 16:37:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-18 16:37:19,505 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:19,505 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:19,518 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:19,706 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:19,706 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:19,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -466412443, now seen corresponding path program 1 times [2024-09-18 16:37:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542941630] [2024-09-18 16:37:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-18 16:37:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:37:19,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542941630] [2024-09-18 16:37:19,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542941630] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:19,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248033042] [2024-09-18 16:37:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:19,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:19,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:19,937 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) [2024-09-18 16:37:19,940 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:37:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:19,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-18 16:37:19,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:37:20,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:37:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248033042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:20,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-09-18 16:37:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193305456] [2024-09-18 16:37:20,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:20,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-18 16:37:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-18 16:37:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-09-18 16:37:20,418 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-18 16:37:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:20,665 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2024-09-18 16:37:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-18 16:37:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) Word has length 38 [2024-09-18 16:37:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:20,667 INFO L225 Difference]: With dead ends: 79 [2024-09-18 16:37:20,669 INFO L226 Difference]: Without dead ends: 60 [2024-09-18 16:37:20,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-09-18 16:37:20,670 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 35 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:20,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 738 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:37:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-18 16:37:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-09-18 16:37:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-18 16:37:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-18 16:37:20,687 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 38 [2024-09-18 16:37:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:20,688 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-18 16:37:20,688 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 18 states have internal predecessors, (48), 8 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-18 16:37:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-18 16:37:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-18 16:37:20,689 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:20,689 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:20,708 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:37:20,890 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-18 16:37:20,891 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:20,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1285413673, now seen corresponding path program 1 times [2024-09-18 16:37:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573380195] [2024-09-18 16:37:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-18 16:37:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:37:20,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:20,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573380195] [2024-09-18 16:37:20,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573380195] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:20,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:20,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-18 16:37:20,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523082339] [2024-09-18 16:37:20,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:20,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-18 16:37:20,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:20,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-18 16:37:20,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:37:20,994 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:37:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:21,024 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-09-18 16:37:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2024-09-18 16:37:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:21,026 INFO L225 Difference]: With dead ends: 80 [2024-09-18 16:37:21,026 INFO L226 Difference]: Without dead ends: 59 [2024-09-18 16:37:21,026 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:37:21,027 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:21,027 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 201 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-18 16:37:21,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-18 16:37:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-09-18 16:37:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-09-18 16:37:21,041 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 40 [2024-09-18 16:37:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:21,041 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-09-18 16:37:21,041 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-18 16:37:21,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-09-18 16:37:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-09-18 16:37:21,044 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:21,044 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:21,045 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-18 16:37:21,045 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:21,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2101385548, now seen corresponding path program 1 times [2024-09-18 16:37:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183037118] [2024-09-18 16:37:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:21,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-18 16:37:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-18 16:37:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-18 16:37:21,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183037118] [2024-09-18 16:37:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183037118] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:21,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:21,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:37:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601819791] [2024-09-18 16:37:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:21,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:37:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:37:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:37:21,115 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-18 16:37:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:21,159 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-09-18 16:37:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2024-09-18 16:37:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:21,160 INFO L225 Difference]: With dead ends: 113 [2024-09-18 16:37:21,160 INFO L226 Difference]: Without dead ends: 57 [2024-09-18 16:37:21,161 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 [2024-09-18 16:37:21,162 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 19 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:21,162 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 197 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-18 16:37:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-09-18 16:37:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.135135135135135) internal successors, (42), 39 states have internal predecessors, (42), 10 states have call successors, (10), 6 states have call predecessors, (10), 7 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2024-09-18 16:37:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-09-18 16:37:21,169 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 58 [2024-09-18 16:37:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:21,169 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-09-18 16:37:21,169 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-18 16:37:21,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-09-18 16:37:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-18 16:37:21,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:21,170 INFO L216 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:21,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-18 16:37:21,171 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1599878374, now seen corresponding path program 1 times [2024-09-18 16:37:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609361494] [2024-09-18 16:37:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-18 16:37:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 16:37:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-18 16:37:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609361494] [2024-09-18 16:37:21,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609361494] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:21,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660847390] [2024-09-18 16:37:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:21,258 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) [2024-09-18 16:37:21,262 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:37:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-18 16:37:21,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-18 16:37:21,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 16:37:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660847390] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-18 16:37:21,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-09-18 16:37:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353088135] [2024-09-18 16:37:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:21,345 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:37:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:37:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-18 16:37:21,346 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-18 16:37:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:21,401 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2024-09-18 16:37:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:37:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-09-18 16:37:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:21,403 INFO L225 Difference]: With dead ends: 105 [2024-09-18 16:37:21,403 INFO L226 Difference]: Without dead ends: 59 [2024-09-18 16:37:21,403 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-18 16:37:21,405 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 13 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:21,405 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 175 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-18 16:37:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-09-18 16:37:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.131578947368421) internal successors, (43), 41 states have internal predecessors, (43), 10 states have call successors, (10), 6 states have call predecessors, (10), 8 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2024-09-18 16:37:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-09-18 16:37:21,417 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 59 [2024-09-18 16:37:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:21,418 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-09-18 16:37:21,418 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-18 16:37:21,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-09-18 16:37:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-18 16:37:21,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:21,419 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:21,444 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 16:37:21,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-18 16:37:21,619 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:21,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -904213436, now seen corresponding path program 1 times [2024-09-18 16:37:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638354370] [2024-09-18 16:37:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-18 16:37:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-18 16:37:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-18 16:37:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638354370] [2024-09-18 16:37:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638354370] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858425636] [2024-09-18 16:37:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:21,814 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) [2024-09-18 16:37:21,816 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:37:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:21,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-18 16:37:21,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-18 16:37:21,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-18 16:37:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858425636] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:22,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2024-09-18 16:37:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904253889] [2024-09-18 16:37:22,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:22,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-18 16:37:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:22,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-18 16:37:22,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-18 16:37:22,317 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-18 16:37:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:22,527 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2024-09-18 16:37:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 16:37:22,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) Word has length 68 [2024-09-18 16:37:22,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:22,529 INFO L225 Difference]: With dead ends: 99 [2024-09-18 16:37:22,529 INFO L226 Difference]: Without dead ends: 67 [2024-09-18 16:37:22,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-09-18 16:37:22,530 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:22,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 498 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-18 16:37:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-18 16:37:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.125) internal successors, (45), 43 states have internal predecessors, (45), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-18 16:37:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-09-18 16:37:22,536 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 68 [2024-09-18 16:37:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:22,536 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-09-18 16:37:22,536 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 10 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 10 states have call successors, (16) [2024-09-18 16:37:22,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-09-18 16:37:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-18 16:37:22,537 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:22,537 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:22,550 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 16:37:22,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:22,742 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:22,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash -640732844, now seen corresponding path program 2 times [2024-09-18 16:37:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336435909] [2024-09-18 16:37:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:22,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:22,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:22,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:22,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:22,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-18 16:37:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 16:37:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:37:23,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336435909] [2024-09-18 16:37:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336435909] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407238386] [2024-09-18 16:37:23,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:37:23,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:23,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:23,066 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) [2024-09-18 16:37:23,069 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:37:23,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:37:23,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:23,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-18 16:37:23,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:37:23,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-18 16:37:23,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407238386] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:23,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:23,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2024-09-18 16:37:23,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311201967] [2024-09-18 16:37:23,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:23,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-18 16:37:23,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-18 16:37:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-09-18 16:37:23,903 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-18 16:37:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:24,282 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-09-18 16:37:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-18 16:37:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) Word has length 77 [2024-09-18 16:37:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:24,284 INFO L225 Difference]: With dead ends: 157 [2024-09-18 16:37:24,284 INFO L226 Difference]: Without dead ends: 101 [2024-09-18 16:37:24,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 159 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2024-09-18 16:37:24,285 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 78 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:24,285 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 508 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:37:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-18 16:37:24,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-09-18 16:37:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (34), 14 states have call predecessors, (34), 13 states have call successors, (34) [2024-09-18 16:37:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2024-09-18 16:37:24,295 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 77 [2024-09-18 16:37:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:24,296 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2024-09-18 16:37:24,296 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.0) internal successors, (95), 22 states have internal predecessors, (95), 12 states have call successors, (18), 2 states have call predecessors, (18), 7 states have return successors, (20), 7 states have call predecessors, (20), 12 states have call successors, (20) [2024-09-18 16:37:24,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2024-09-18 16:37:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-18 16:37:24,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:24,297 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:24,312 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:37:24,498 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-18 16:37:24,498 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:24,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1768804806, now seen corresponding path program 1 times [2024-09-18 16:37:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3350168] [2024-09-18 16:37:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:24,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-18 16:37:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-18 16:37:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-18 16:37:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3350168] [2024-09-18 16:37:24,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3350168] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:37:24,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:37:24,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:37:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524076182] [2024-09-18 16:37:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:37:24,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:37:24,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:37:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:37:24,601 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-18 16:37:24,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:24,642 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2024-09-18 16:37:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:37:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 84 [2024-09-18 16:37:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:24,643 INFO L225 Difference]: With dead ends: 185 [2024-09-18 16:37:24,644 INFO L226 Difference]: Without dead ends: 97 [2024-09-18 16:37:24,644 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-18 16:37:24,644 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:24,645 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:37:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-18 16:37:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-09-18 16:37:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.1029411764705883) internal successors, (75), 72 states have internal predecessors, (75), 14 states have call successors, (14), 10 states have call predecessors, (14), 14 states have return successors, (32), 14 states have call predecessors, (32), 13 states have call successors, (32) [2024-09-18 16:37:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2024-09-18 16:37:24,654 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 84 [2024-09-18 16:37:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:24,654 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2024-09-18 16:37:24,654 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-18 16:37:24,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2024-09-18 16:37:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-18 16:37:24,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:37:24,656 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:24,656 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-18 16:37:24,656 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:37:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -802082800, now seen corresponding path program 2 times [2024-09-18 16:37:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:37:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621510177] [2024-09-18 16:37:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:37:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:37:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:37:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-18 16:37:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-18 16:37:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:37:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:37:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-18 16:37:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 16:37:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-18 16:37:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:37:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 16:37:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:37:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621510177] [2024-09-18 16:37:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621510177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:37:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736328670] [2024-09-18 16:37:24,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:37:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:37:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:37:24,918 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) [2024-09-18 16:37:24,919 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:37:24,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:37:24,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:37:24,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-18 16:37:24,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:37:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-18 16:37:25,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:37:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-18 16:37:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736328670] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:37:26,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:37:26,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 25 [2024-09-18 16:37:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146816996] [2024-09-18 16:37:26,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:37:26,812 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 16:37:26,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:37:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 16:37:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-09-18 16:37:26,813 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-18 16:37:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:37:26,994 INFO L93 Difference]: Finished difference Result 158 states and 212 transitions. [2024-09-18 16:37:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 16:37:26,995 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) Word has length 93 [2024-09-18 16:37:26,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:37:26,995 INFO L225 Difference]: With dead ends: 158 [2024-09-18 16:37:26,996 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:37:26,996 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2024-09-18 16:37:26,997 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:37:26,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 243 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:37:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:37:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:37:26,998 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) [2024-09-18 16:37:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:37:26,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2024-09-18 16:37:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:37:26,998 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:37:26,998 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.208333333333333) internal successors, (125), 25 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (25), 7 states have call predecessors, (25), 15 states have call successors, (25) [2024-09-18 16:37:26,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:37:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:37:26,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:37:27,001 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:37:27,013 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 16:37:27,205 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-18 16:37:27,208 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:37:27,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:37:28,567 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:37:28,587 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-18 16:37:28,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:37:28 BoogieIcfgContainer [2024-09-18 16:37:28,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:37:28,589 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:37:28,589 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:37:28,589 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:37:28,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:37:17" (3/4) ... [2024-09-18 16:37:28,591 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:37:28,654 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:37:28,655 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:37:28,655 INFO L158 Benchmark]: Toolchain (without parser) took 11340.86ms. Allocated memory was 138.4MB in the beginning and 343.9MB in the end (delta: 205.5MB). Free memory was 66.2MB in the beginning and 139.7MB in the end (delta: -73.5MB). Peak memory consumption was 133.9MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,655 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:37:28,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.03ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 66.1MB in the beginning and 161.5MB in the end (delta: -95.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,659 INFO L158 Benchmark]: Boogie Procedure Inliner took 13.84ms. Allocated memory is still 195.0MB. Free memory was 161.5MB in the beginning and 160.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,659 INFO L158 Benchmark]: Boogie Preprocessor took 27.52ms. Allocated memory is still 195.0MB. Free memory was 160.4MB in the beginning and 158.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,659 INFO L158 Benchmark]: RCFGBuilder took 267.08ms. Allocated memory is still 195.0MB. Free memory was 158.3MB in the beginning and 141.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,660 INFO L158 Benchmark]: TraceAbstraction took 10746.96ms. Allocated memory was 195.0MB in the beginning and 343.9MB in the end (delta: 148.9MB). Free memory was 141.5MB in the beginning and 141.8MB in the end (delta: -286.0kB). Peak memory consumption was 180.0MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,660 INFO L158 Benchmark]: Witness Printer took 65.99ms. Allocated memory is still 343.9MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:37:28,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.03ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 66.1MB in the beginning and 161.5MB in the end (delta: -95.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 13.84ms. Allocated memory is still 195.0MB. Free memory was 161.5MB in the beginning and 160.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.52ms. Allocated memory is still 195.0MB. Free memory was 160.4MB in the beginning and 158.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.08ms. Allocated memory is still 195.0MB. Free memory was 158.3MB in the beginning and 141.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10746.96ms. Allocated memory was 195.0MB in the beginning and 343.9MB in the end (delta: 148.9MB). Free memory was 141.5MB in the beginning and 141.8MB in the end (delta: -286.0kB). Peak memory consumption was 180.0MB. Max. memory is 16.1GB. * Witness Printer took 65.99ms. Allocated memory is still 343.9MB. Free memory was 141.8MB in the beginning and 139.7MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 98]: 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 7 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 4316 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3584 mSDsCounter, 161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1777 IncrementalHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 161 mSolverCounterUnsat, 732 mSDtfsCounter, 1777 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 805 SyntacticMatches, 19 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=11, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1034 NumberOfCodeBlocks, 1034 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1323 ConstructedInterpolants, 0 QuantifiedInterpolants, 3220 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 287/540 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 - ProcedureContractResult [Line: 31]: Procedure Contract for multiple_of Derived contract for procedure multiple_of. Ensures: (((((((long long) \old(m) * 2) < ((long long) \old(n) + 1)) || (\old(n) == \old(m))) || (\old(n) == 0)) || (((long long) \old(n) + \old(m)) < 1)) || (\old(m) < 1)) - ProcedureContractResult [Line: 17]: Procedure Contract for mult Derived contract for procedure mult. Ensures: ((((2 < \result) || (\result == 0)) || (\old(m) < 2)) || (\old(n) < 2)) - ProcedureContractResult [Line: 52]: Procedure Contract for is_prime Derived contract for procedure is_prime. Ensures: ((\old(n) < 3) || (\result == 0)) RESULT: Ultimate proved your program to be correct! [2024-09-18 16:37:28,686 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