This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:23:46,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:23:47,046 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:23:47,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:23:47,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:23:47,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:23:47,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:23:47,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:23:47,084 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:23:47,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:23:47,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:23:47,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:23:47,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:23:47,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:23:47,090 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:23:47,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:23:47,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:23:47,091 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:23:47,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:23:47,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:23:47,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:23:47,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:23:47,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:23:47,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:23:47,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:23:47,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:23:47,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:23:47,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:23:47,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:23:47,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:23:47,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:23:47,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:23:47,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:23:47,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:23:47,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:23:47,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:23:47,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:23:47,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:23:47,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:23:47,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:23:47,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:23:47,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:23:47,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:23:47,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:23:47,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:23:47,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:23:47,454 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:23:47,455 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:23:47,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2024-09-15 20:23:48,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:23:49,142 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:23:49,143 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2024-09-15 20:23:49,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/fc524e9ac/2615b3a2b2814d098a3b788d878b68e8/FLAG9f7646e58 [2024-09-15 20:23:49,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/fc524e9ac/2615b3a2b2814d098a3b788d878b68e8 [2024-09-15 20:23:49,172 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:23:49,173 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:23:49,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/ps3-ll_unwindbound2.yml/witness-2.1.yml [2024-09-15 20:23:49,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:23:49,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:23:49,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:23:49,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:23:49,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:23:49,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:23:49" (1/2) ... [2024-09-15 20:23:49,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec1f89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:23:49" (1/2) ... [2024-09-15 20:23:49,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@639a5947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:23:49" (2/2) ... [2024-09-15 20:23:49,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec1f89e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:23:49" (2/2) ... [2024-09-15 20:23:49,253 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:23:49,257 INFO L1541 ArrayList]: Loop invariant at [L27-L36] (((((3 * ((__int128) y * y)) + y) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 6)) && (\old(counter) == 0)) [2024-09-15 20:23:49,257 INFO L1541 ArrayList]: Function contract at [L18]: requires (counter == 0), ensures (\old(counter) == 0) [2024-09-15 20:23:49,257 INFO L1541 ArrayList]: Function contract at [L9]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:23:49,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:23:49,422 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] [2024-09-15 20:23:49,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:23:49,448 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:23:49,496 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] Start Parsing Global Start Parsing Global Start Parsing Local [2024-09-15 20:23:49,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:23:49,529 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:23:49,530 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49 WrapperNode [2024-09-15 20:23:49,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:23:49,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:23:49,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:23:49,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:23:49,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,563 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 39 [2024-09-15 20:23:49,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:23:49,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:23:49,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:23:49,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:23:49,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,591 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 [2024-09-15 20:23:49,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:23:49,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:23:49,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:23:49,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:23:49,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (1/1) ... [2024-09-15 20:23:49,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:23:49,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:23:49,636 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:23:49,640 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:23:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:23:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:23:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:23:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:23:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:23:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:23:49,757 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:23:49,759 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:23:49,888 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:23:49,914 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-09-15 20:23:49,914 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:23:49,938 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:23:49,939 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:23:49,939 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:23:49 BoogieIcfgContainer [2024-09-15 20:23:49,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:23:49,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:23:49,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:23:49,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:23:49,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:23:49" (1/4) ... [2024-09-15 20:23:49,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc8f74e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:23:49" (2/4) ... [2024-09-15 20:23:49,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc8f74e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:23:49" (3/4) ... [2024-09-15 20:23:49,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc8f74e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:23:49, skipping insertion in model container [2024-09-15 20:23:49,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:23:49" (4/4) ... [2024-09-15 20:23:49,957 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound2.c [2024-09-15 20:23:49,977 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:23:49,978 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-15 20:23:50,025 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:23:50,031 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;@25e8f3cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:23:50,032 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-15 20:23:50,036 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) [2024-09-15 20:23:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-15 20:23:50,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:23:50,042 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-15 20:23:50,043 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)] === [2024-09-15 20:23:50,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:23:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2545, now seen corresponding path program 1 times [2024-09-15 20:23:50,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:23:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533807494] [2024-09-15 20:23:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:50,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:23:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:23:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:50,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:23:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533807494] [2024-09-15 20:23:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533807494] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:23:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:23:50,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:23:50,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821329253] [2024-09-15 20:23:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:23:50,239 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:23:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:23:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:23:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:23:50,275 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) [2024-09-15 20:23:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:23:50,316 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-15 20:23:50,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:23:50,326 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 [2024-09-15 20:23:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:23:50,339 INFO L225 Difference]: With dead ends: 25 [2024-09-15 20:23:50,339 INFO L226 Difference]: Without dead ends: 24 [2024-09-15 20:23:50,340 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 [2024-09-15 20:23:50,345 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:23:50,346 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:23:50,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-15 20:23:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-09-15 20:23:50,384 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) [2024-09-15 20:23:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-15 20:23:50,386 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 2 [2024-09-15 20:23:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:23:50,387 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-15 20:23:50,387 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) [2024-09-15 20:23:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-15 20:23:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-15 20:23:50,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:23:50,388 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-15 20:23:50,388 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:23:50,388 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)] === [2024-09-15 20:23:50,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:23:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 78932, now seen corresponding path program 1 times [2024-09-15 20:23:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:23:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537231727] [2024-09-15 20:23:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:23:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:23:50,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649625961] [2024-09-15 20:23:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:23:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:23:50,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:23:50,448 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:23:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:23:50,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-15 20:23:50,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:23:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:50,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:23:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:23:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537231727] [2024-09-15 20:23:50,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:23:50,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649625961] [2024-09-15 20:23:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649625961] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:23:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:23:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:23:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160159372] [2024-09-15 20:23:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:23:50,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:23:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:23:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:23:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:23:50,586 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) [2024-09-15 20:23:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:23:50,646 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-09-15 20:23:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:23:50,647 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 [2024-09-15 20:23:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:23:50,648 INFO L225 Difference]: With dead ends: 28 [2024-09-15 20:23:50,648 INFO L226 Difference]: Without dead ends: 24 [2024-09-15 20:23:50,648 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 [2024-09-15 20:23:50,649 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:23:50,651 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:23:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-15 20:23:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-15 20:23:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) 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, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:23:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-09-15 20:23:50,659 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 3 [2024-09-15 20:23:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:23:50,660 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-09-15 20:23:50,660 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) [2024-09-15 20:23:50,660 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-09-15 20:23:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:23:50,661 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:23:50,661 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:23:50,679 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:23:50,863 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:23:50,864 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:23:50,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:23:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1552363358, now seen corresponding path program 1 times [2024-09-15 20:23:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:23:50,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257301243] [2024-09-15 20:23:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:23:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:23:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:23:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257301243] [2024-09-15 20:23:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257301243] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:23:51,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:23:51,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:23:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497901494] [2024-09-15 20:23:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:23:51,047 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:23:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:23:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:23:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:23:51,050 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2024-09-15 20:23:55,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-15 20:23:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:23:55,356 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2024-09-15 20:23:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:23:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 [2024-09-15 20:23:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:23:55,357 INFO L225 Difference]: With dead ends: 20 [2024-09-15 20:23:55,357 INFO L226 Difference]: Without dead ends: 20 [2024-09-15 20:23:55,358 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:23:55,359 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-15 20:23:55,359 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-09-15 20:23:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-15 20:23:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2024-09-15 20:23:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 20:23:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-09-15 20:23:55,375 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2024-09-15 20:23:55,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:23:55,376 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-09-15 20:23:55,376 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2024-09-15 20:23:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-09-15 20:23:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:23:55,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:23:55,377 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:23:55,377 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:23:55,377 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:23:55,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:23:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1552363197, now seen corresponding path program 1 times [2024-09-15 20:23:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:23:55,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973910024] [2024-09-15 20:23:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:23:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:23:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:55,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:23:55,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973910024] [2024-09-15 20:23:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973910024] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:23:55,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:23:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:23:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277019032] [2024-09-15 20:23:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:23:55,467 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:23:55,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:23:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:23:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:23:55,468 INFO L87 Difference]: Start difference. First operand 15 states and 17 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) [2024-09-15 20:23:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:23:55,493 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2024-09-15 20:23:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:23:55,494 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 [2024-09-15 20:23:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:23:55,495 INFO L225 Difference]: With dead ends: 14 [2024-09-15 20:23:55,495 INFO L226 Difference]: Without dead ends: 13 [2024-09-15 20:23:55,495 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 [2024-09-15 20:23:55,497 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:23:55,498 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:23:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-09-15 20:23:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-09-15 20:23:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-09-15 20:23:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-09-15 20:23:55,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2024-09-15 20:23:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:23:55,503 INFO L474 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-09-15 20:23:55,503 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) [2024-09-15 20:23:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-09-15 20:23:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 20:23:55,505 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:23:55,505 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:23:55,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:23:55,506 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 4 more)] === [2024-09-15 20:23:55,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:23:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1755858557, now seen corresponding path program 1 times [2024-09-15 20:23:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:23:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837325257] [2024-09-15 20:23:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:23:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-15 20:23:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956497856] [2024-09-15 20:23:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:23:55,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:23:55,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:23:55,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:23:55,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:23:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:23:55,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-15 20:23:55,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:23:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:55,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:23:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:23:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:23:55,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837325257] [2024-09-15 20:23:55,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-15 20:23:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956497856] [2024-09-15 20:23:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956497856] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:23:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:23:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-09-15 20:23:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658280796] [2024-09-15 20:23:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:23:55,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:23:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:23:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:23:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:23:55,788 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-09-15 20:23:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:23:55,803 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-09-15 20:23:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:23:55,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2024-09-15 20:23:55,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:23:55,804 INFO L225 Difference]: With dead ends: 12 [2024-09-15 20:23:55,804 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:23:55,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:23:55,805 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:23:55,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:23:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:23:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:23:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:23:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:23:55,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2024-09-15 20:23:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:23:55,806 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:23:55,806 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-09-15 20:23:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:23:55,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:23:55,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (6 of 7 remaining) [2024-09-15 20:23:55,810 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-09-15 20:23:55,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (4 of 7 remaining) [2024-09-15 20:23:55,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (3 of 7 remaining) [2024-09-15 20:23:55,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONPOST_CONDITION (2 of 7 remaining) [2024-09-15 20:23:55,811 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-09-15 20:23:55,812 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 7 remaining) [2024-09-15 20:23:55,829 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:23:56,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:23:56,019 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-15 20:23:56,020 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:23:56,022 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:23:56,022 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:23:56,023 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:23:56 BoogieIcfgContainer [2024-09-15 20:23:56,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:23:56,024 INFO L158 Benchmark]: Toolchain (without parser) took 6792.05ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 37.8MB in the beginning and 61.0MB in the end (delta: -23.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:23:56,024 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:23:56,024 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:23:56,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.27ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 37.6MB in the beginning and 64.3MB in the end (delta: -26.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-09-15 20:23:56,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.70ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 62.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:23:56,025 INFO L158 Benchmark]: Boogie Preprocessor took 38.03ms. Allocated memory is still 86.0MB. Free memory was 62.8MB in the beginning and 61.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:23:56,025 INFO L158 Benchmark]: RCFGBuilder took 337.53ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 48.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:23:56,025 INFO L158 Benchmark]: TraceAbstraction took 6078.93ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 61.0MB in the end (delta: -12.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:23:56,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 62.9MB. Free memory was 39.7MB in the beginning and 39.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.27ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 37.6MB in the beginning and 64.3MB in the end (delta: -26.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.70ms. Allocated memory is still 86.0MB. Free memory was 64.3MB in the beginning and 62.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.03ms. Allocated memory is still 86.0MB. Free memory was 62.8MB in the beginning and 61.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.53ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 48.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6078.93ms. Allocated memory is still 86.0MB. Free memory was 48.2MB in the beginning and 61.0MB in the end (delta: -12.8MB). There was no memory consumed. 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: 18]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 27]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 9]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 18]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 9]: 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: 6.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 62 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 2 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 1/2 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! [2024-09-15 20:23:56,044 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...