This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 05:42:25,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:42:25,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:42:25,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:42:25,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:42:25,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:42:25,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:42:25,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:42:25,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:42:25,503 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:42:25,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:42:25,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:42:25,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:42:25,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:42:25,505 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:42:25,505 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:42:25,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:42:25,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:42:25,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:42:25,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:42:25,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:42:25,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:42:25,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:42:25,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:42:25,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:42:25,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:42:25,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:42:25,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:42:25,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:42:25,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:42:25,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:42:25,512 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:42:25,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:42:25,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:42:25,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:42:25,725 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:42:25,726 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:42:25,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/geo2-ll_unwindbound1.yml/witness-2.1.yml [2024-09-13 05:42:25,795 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:42:25,795 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:42:25,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2024-09-13 05:42:26,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:42:27,085 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:42:27,085 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c [2024-09-13 05:42:27,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8282a8068/4ed572e44420454fac57a94ce76ce9ee/FLAGb6f493c74 [2024-09-13 05:42:27,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8282a8068/4ed572e44420454fac57a94ce76ce9ee [2024-09-13 05:42:27,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:42:27,501 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:42:27,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:42:27,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:42:27,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:42:27,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:42:25" (1/2) ... [2024-09-13 05:42:27,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555fc845 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:42:27, skipping insertion in model container [2024-09-13 05:42:27,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:42:25" (1/2) ... [2024-09-13 05:42:27,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ef1c567 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:42:27, skipping insertion in model container [2024-09-13 05:42:27,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:42:27" (2/2) ... [2024-09-13 05:42:27,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555fc845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27, skipping insertion in model container [2024-09-13 05:42:27,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:42:27" (2/2) ... [2024-09-13 05:42:27,518 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:42:27,518 INFO L1541 ArrayList]: Loop invariant at [L34-L43] (((((y == 1) && (x == 1)) && (counter == 0)) || (((z == y) && (1 <= counter)) && (x == ((long long) z + 1)))) && (\old(counter) == 0)) [2024-09-13 05:42:27,518 INFO L1541 ArrayList]: Function contract at [L24]: requires (counter == 0), ensures (\old(counter) == 0) [2024-09-13 05:42:27,518 INFO L1541 ArrayList]: Function contract at [L14]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:42:27,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:42:27,671 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] [2024-09-13 05:42:27,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:42:27,691 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 05:42:27,717 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound1.c[525,538] Start Parsing Global Start Parsing Global Start Parsing Local [2024-09-13 05:42:27,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:42:27,735 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:42:27,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27 WrapperNode [2024-09-13 05:42:27,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:42:27,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:42:27,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:42:27,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:42:27,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,769 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2024-09-13 05:42:27,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:42:27,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:42:27,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:42:27,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:42:27,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,791 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 05:42:27,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:42:27,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:42:27,806 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:42:27,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:42:27,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (1/1) ... [2024-09-13 05:42:27,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:42:27,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:42:27,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:42:27,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:42:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:42:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 05:42:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:42:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:42:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 05:42:27,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 05:42:27,921 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:42:27,922 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:42:28,061 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 05:42:28,087 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-09-13 05:42:28,088 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:42:28,113 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:42:28,114 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-13 05:42:28,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:42:28 BoogieIcfgContainer [2024-09-13 05:42:28,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:42:28,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:42:28,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:42:28,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:42:28,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:42:25" (1/4) ... [2024-09-13 05:42:28,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221b07c6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:42:28, skipping insertion in model container [2024-09-13 05:42:28,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:42:27" (2/4) ... [2024-09-13 05:42:28,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221b07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:42:28, skipping insertion in model container [2024-09-13 05:42:28,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:42:27" (3/4) ... [2024-09-13 05:42:28,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221b07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:42:28, skipping insertion in model container [2024-09-13 05:42:28,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:42:28" (4/4) ... [2024-09-13 05:42:28,121 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound1.c [2024-09-13 05:42:28,134 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:42:28,135 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-13 05:42:28,176 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:42:28,183 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=None, 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;@3d383201, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:42:28,183 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-13 05:42:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 05:42:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-13 05:42:28,192 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:28,192 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-13 05:42:28,193 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:28,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2545, now seen corresponding path program 1 times [2024-09-13 05:42:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217965189] [2024-09-13 05:42:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:42:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217965189] [2024-09-13 05:42:28,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217965189] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:42:28,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:42:28,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-13 05:42:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084484359] [2024-09-13 05:42:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:42:28,317 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:42:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:42:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:42:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:28,341 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:42:28,380 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-13 05:42:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:42:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2024-09-13 05:42:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:42:28,387 INFO L225 Difference]: With dead ends: 25 [2024-09-13 05:42:28,387 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 05:42:28,401 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:28,406 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:42:28,407 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:42:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 05:42:28,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-09-13 05:42:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 05:42:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-13 05:42:28,466 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 2 [2024-09-13 05:42:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:42:28,466 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-13 05:42:28,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-13 05:42:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-13 05:42:28,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:28,467 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-13 05:42:28,471 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:42:28,471 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:28,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 78932, now seen corresponding path program 1 times [2024-09-13 05:42:28,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096758132] [2024-09-13 05:42:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:42:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096758132] [2024-09-13 05:42:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096758132] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:42:28,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:42:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:42:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209753116] [2024-09-13 05:42:28,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:42:28,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:42:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:42:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:42:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:42:28,678 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:42:28,697 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-09-13 05:42:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:42:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2024-09-13 05:42:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:42:28,698 INFO L225 Difference]: With dead ends: 23 [2024-09-13 05:42:28,698 INFO L226 Difference]: Without dead ends: 23 [2024-09-13 05:42:28,698 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:42:28,699 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:42:28,699 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:42:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-13 05:42:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-09-13 05:42:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 05:42:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-09-13 05:42:28,705 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 3 [2024-09-13 05:42:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:42:28,705 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-09-13 05:42:28,705 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,706 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-09-13 05:42:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-13 05:42:28,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:28,707 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-13 05:42:28,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 05:42:28,707 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:28,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1943463208, now seen corresponding path program 1 times [2024-09-13 05:42:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116978816] [2024-09-13 05:42:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:42:28,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584399447] [2024-09-13 05:42:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:28,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:42:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:42:28,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:42:28,745 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:42:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:28,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:42:28,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:42:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:28,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:42:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:42:28,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116978816] [2024-09-13 05:42:28,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:42:28,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584399447] [2024-09-13 05:42:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584399447] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:42:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:42:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:42:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683388919] [2024-09-13 05:42:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:42:28,828 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:42:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:42:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:42:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:28,829 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:42:28,849 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-09-13 05:42:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:42:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-09-13 05:42:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:42:28,850 INFO L225 Difference]: With dead ends: 30 [2024-09-13 05:42:28,850 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 05:42:28,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:28,851 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:42:28,851 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:42:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 05:42:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-09-13 05:42:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:42:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-09-13 05:42:28,854 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 6 [2024-09-13 05:42:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:42:28,856 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-09-13 05:42:28,856 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-09-13 05:42:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 05:42:28,856 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:28,856 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:42:28,873 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 05:42:29,057 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:42:29,057 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:29,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1552363358, now seen corresponding path program 1 times [2024-09-13 05:42:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:29,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490797649] [2024-09-13 05:42:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:29,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:42:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490797649] [2024-09-13 05:42:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490797649] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:42:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:42:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:42:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259184934] [2024-09-13 05:42:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:42:29,130 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:42:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:42:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:42:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:29,131 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:42:29,137 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-09-13 05:42:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:42:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-13 05:42:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:42:29,139 INFO L225 Difference]: With dead ends: 25 [2024-09-13 05:42:29,139 INFO L226 Difference]: Without dead ends: 25 [2024-09-13 05:42:29,139 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:29,140 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:42:29,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:42:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-13 05:42:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-13 05:42:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:42:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-09-13 05:42:29,144 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 9 [2024-09-13 05:42:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:42:29,144 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-09-13 05:42:29,144 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-09-13 05:42:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 05:42:29,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:29,145 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:42:29,145 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 05:42:29,145 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:29,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1552363197, now seen corresponding path program 1 times [2024-09-13 05:42:29,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034097086] [2024-09-13 05:42:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:42:29,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034097086] [2024-09-13 05:42:29,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034097086] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:42:29,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:42:29,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:42:29,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746901873] [2024-09-13 05:42:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:42:29,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:42:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:42:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:42:29,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:29,167 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:42:29,179 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-09-13 05:42:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:42:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-09-13 05:42:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:42:29,180 INFO L225 Difference]: With dead ends: 24 [2024-09-13 05:42:29,180 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 05:42:29,180 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:42:29,181 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 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 [2024-09-13 05:42:29,181 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:42:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 05:42:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-13 05:42:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:42:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-09-13 05:42:29,184 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 9 [2024-09-13 05:42:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:42:29,185 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-09-13 05:42:29,185 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:42:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-09-13 05:42:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-13 05:42:29,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:42:29,185 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:42:29,186 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 05:42:29,186 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:42:29,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:42:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858557, now seen corresponding path program 1 times [2024-09-13 05:42:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:42:29,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572566191] [2024-09-13 05:42:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:29,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:42:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:42:29,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603207335] [2024-09-13 05:42:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:42:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:42:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:42:29,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:42:29,218 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:42:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:42:29,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 05:42:29,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:42:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:42:29,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:42:37,636 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:42:49,657 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:43:01,721 WARN L293 SmtUtils]: Spent 12.06s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:43:10,885 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:43:54,249 WARN L293 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:44:06,275 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:44:22,318 WARN L293 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:44:32,045 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:47:03,153 WARN L293 SmtUtils]: Spent 2.44m on a formula simplification that was a NOOP. DAG size: 109 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 05:47:27,385 WARN L293 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:47:39,530 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:47:51,933 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:48:04,771 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:48:42,077 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:48:54,139 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:49:02,149 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:49:10,096 WARN L293 SmtUtils]: Spent 7.95s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:49:18,133 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-13 05:49:23,192 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) 1) 18446744073709551616))) (let ((.cse3 (< 0 c_~counter~0)) (.cse1 (= .cse4 0))) (and (forall ((v_z_2 Int)) (or (< 18446744073709551615 v_z_2) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| v_z_2) 1) 18446744073709551616) 1) (= (mod (* |c_ULTIMATE.start_main_~y~0#1| v_z_2) 18446744073709551616) v_z_2) (< v_z_2 0))) (forall ((v_z_1 Int)) (let ((.cse0 (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| v_z_1) 1) 18446744073709551616))) (or (< v_z_1 0) (= .cse0 1) (= 18446744073709551615 v_z_1) (< 18446744073709551615 v_z_1) (= .cse0 (+ v_z_1 1))))) (= |c_ULTIMATE.start_main_old_~counter~0#1| 0) (or (= (mod (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) 18446744073709551616) 1) .cse1) (forall ((v_z_6 Int)) (let ((.cse2 (mod (* |c_ULTIMATE.start_main_~y~0#1| v_z_6) 18446744073709551616))) (or (< v_z_6 0) (= v_z_6 .cse2) (< 18446744073709551615 v_z_6) (= .cse2 1)))) (forall ((v_z_5 Int)) (or (= (mod (* |c_ULTIMATE.start_main_~y~0#1| v_z_5) 18446744073709551616) 1) (= 18446744073709551615 v_z_5) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| v_z_5) 1) 18446744073709551616) (+ v_z_5 1)) (< 18446744073709551615 v_z_5) (< v_z_5 0))) (or .cse3 (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (= (mod (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 18446744073709551616) 1))) (or (forall ((|ULTIMATE.start_main_~z~0#1| Int)) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1) 18446744073709551616) 1)) .cse3) (or (forall ((v_z_5 Int)) (or (= (mod (* |c_ULTIMATE.start_main_~y~0#1| v_z_5) 18446744073709551616) 1) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| v_z_5) 1) 18446744073709551616) (+ v_z_5 1)) (< 18446744073709551615 v_z_5) (< v_z_5 0))) .cse1) (or (and (forall ((v_z_4 Int)) (or (< v_z_4 0) (< 18446744073709551615 v_z_4) (= 18446744073709551615 v_z_4) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| v_z_4) 1) 18446744073709551616) (+ v_z_4 1)))) (forall ((v_z_3 Int)) (or (= v_z_3 (mod (* |c_ULTIMATE.start_main_~y~0#1| v_z_3) 18446744073709551616)) (< v_z_3 0) (< 18446744073709551615 v_z_3))) (<= 1 c_~counter~0) .cse1) (= c_~counter~0 0)) (or (= .cse4 1) .cse1)))) is different from false [2024-09-13 05:49:23,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572566191] [2024-09-13 05:49:23,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:49:23,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603207335] [2024-09-13 05:49:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603207335] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:23,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:49:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-13 05:49:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300863161] [2024-09-13 05:49:23,306 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:23,306 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 05:49:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 05:49:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=58, Unknown=2, NotChecked=16, Total=110 [2024-09-13 05:49:23,307 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 05:49:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:24,313 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-09-13 05:49:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 05:49:24,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-13 05:49:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:24,314 INFO L225 Difference]: With dead ends: 34 [2024-09-13 05:49:24,314 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 05:49:24,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 155.9s TimeCoverageRelationStatistics Valid=34, Invalid=58, Unknown=2, NotChecked=16, Total=110 [2024-09-13 05:49:24,315 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:24,315 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-13 05:49:24,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 05:49:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 05:49:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 05:49:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-09-13 05:49:24,319 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2024-09-13 05:49:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:24,320 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-09-13 05:49:24,320 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 05:49:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-09-13 05:49:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 05:49:24,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:49:24,321 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-09-13 05:49:24,332 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 05:49:24,522 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 [2024-09-13 05:49:24,523 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-13 05:49:24,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:49:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 362320500, now seen corresponding path program 2 times [2024-09-13 05:49:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:49:24,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560130815] [2024-09-13 05:49:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:49:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:49:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:24,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 05:49:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:24,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-13 05:49:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:49:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 05:49:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:49:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560130815] [2024-09-13 05:49:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560130815] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:49:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354875957] [2024-09-13 05:49:24,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 05:49:24,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:49:24,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:49:24,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:49:24,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:49:24,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 05:49:24,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 05:49:24,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-13 05:49:24,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:49:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 05:49:25,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:49:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 05:49:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354875957] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:49:25,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:49:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 6 [2024-09-13 05:49:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128383271] [2024-09-13 05:49:25,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:49:25,850 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 05:49:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:49:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 05:49:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 05:49:25,850 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 05:49:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:49:26,241 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2024-09-13 05:49:26,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 05:49:26,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2024-09-13 05:49:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:49:26,241 INFO L225 Difference]: With dead ends: 14 [2024-09-13 05:49:26,241 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:49:26,242 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-09-13 05:49:26,242 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:49:26,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 05:49:26,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:49:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:49:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:49:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:49:26,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-09-13 05:49:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:49:26,243 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:49:26,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 05:49:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:49:26,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:49:26,245 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (6 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (4 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (3 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONPOST_CONDITION (2 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-09-13 05:49:26,246 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 7 remaining) [2024-09-13 05:49:26,258 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 05:49:26,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 05:49:26,453 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-09-13 05:49:26,454 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:49:26,455 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-13 05:49:26,455 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-13 05:49:26,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:49:26 BoogieIcfgContainer [2024-09-13 05:49:26,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:49:26,456 INFO L158 Benchmark]: Toolchain (without parser) took 418955.35ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 64.0MB in the beginning and 86.7MB in the end (delta: -22.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2024-09-13 05:49:26,456 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 136.3MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: CDTParser took 1.11ms. Allocated memory is still 136.3MB. Free memory was 108.0MB in the beginning and 107.8MB in the end (delta: 125.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.56ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 63.9MB in the beginning and 142.9MB in the end (delta: -78.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 141.9MB in the end (delta: 918.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: Boogie Preprocessor took 35.75ms. Allocated memory is still 178.3MB. Free memory was 141.9MB in the beginning and 139.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: RCFGBuilder took 307.99ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 126.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 05:49:26,457 INFO L158 Benchmark]: TraceAbstraction took 418340.21ms. Allocated memory is still 178.3MB. Free memory was 126.2MB in the beginning and 86.7MB in the end (delta: 39.5MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2024-09-13 05:49:26,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 136.3MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.11ms. Allocated memory is still 136.3MB. Free memory was 108.0MB in the beginning and 107.8MB in the end (delta: 125.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.56ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 63.9MB in the beginning and 142.9MB in the end (delta: -78.9MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 178.3MB. Free memory was 142.9MB in the beginning and 141.9MB in the end (delta: 918.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.75ms. Allocated memory is still 178.3MB. Free memory was 141.9MB in the beginning and 139.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.99ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 126.2MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 418340.21ms. Allocated memory is still 178.3MB. Free memory was 126.2MB in the beginning and 86.7MB in the end (delta: 39.5MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 24]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 34]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 24]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 418.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 62 mSDsluCounter, 216 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 110 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 156.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=6, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 415.6s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 2 NumberOfNonLiveVariables, 197 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 28/34 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:49:26,671 WARN L435 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-09-13 05:49:26,802 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...