./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 142fac26e58e32d5894ddee72fe19273cb83800658fff05eab06588458831b6c --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:41:26,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:41:26,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:41:26,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:41:26,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:41:26,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:41:26,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:41:26,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:41:26,897 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:41:26,897 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:41:26,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:41:26,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:41:26,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:41:26,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:41:26,899 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:41:26,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:41:26,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:41:26,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:41:26,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:41:26,901 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:41:26,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:41:26,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:41:26,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:41:26,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:41:26,906 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:41:26,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:41:26,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:41:26,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:41:26,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:41:26,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:41:26,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:41:26,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:41:26,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:41:26,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:41:26,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:41:26,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:41:26,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:41:26,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:41:26,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:41:26,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:41:26,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:41:26,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:41:26,913 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 142fac26e58e32d5894ddee72fe19273cb83800658fff05eab06588458831b6c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:41:27,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:41:27,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:41:27,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:41:27,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:41:27,162 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:41:27,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c [2024-09-24 23:41:28,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:41:28,694 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:41:28,696 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound50.c [2024-09-24 23:41:28,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/be9ddd5d3/20fa6d96a6f54bbb89b6b7a53b0a0bb9/FLAGf30b66aec [2024-09-24 23:41:29,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/be9ddd5d3/20fa6d96a6f54bbb89b6b7a53b0a0bb9 [2024-09-24 23:41:29,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:41:29,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:41:29,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:41:29,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:41:29,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:41:29,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef73695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29, skipping insertion in model container [2024-09-24 23:41:29,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:41:29,260 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/geo1-ll_valuebound50.c[545,558] [2024-09-24 23:41:29,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:41:29,283 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:41:29,292 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/geo1-ll_valuebound50.c[545,558] [2024-09-24 23:41:29,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:41:29,312 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:41:29,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29 WrapperNode [2024-09-24 23:41:29,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:41:29,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:41:29,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:41:29,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:41:29,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,332 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:41:29,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:41:29,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:41:29,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:41:29,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:41:29,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,355 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:41:29,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:41:29,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:41:29,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:41:29,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:41:29,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (1/1) ... [2024-09-24 23:41:29,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:41:29,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:41:29,396 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) [2024-09-24 23:41:29,402 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 [2024-09-24 23:41:29,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:41:29,448 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:41:29,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:41:29,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:41:29,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:41:29,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:41:29,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:41:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:41:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:41:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:41:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:41:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:41:29,515 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:41:29,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:41:29,693 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-24 23:41:29,696 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:41:29,722 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:41:29,722 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 23:41:29,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:41:29 BoogieIcfgContainer [2024-09-24 23:41:29,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:41:29,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:41:29,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:41:29,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:41:29,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:41:29" (1/3) ... [2024-09-24 23:41:29,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419f0312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:41:29, skipping insertion in model container [2024-09-24 23:41:29,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:41:29" (2/3) ... [2024-09-24 23:41:29,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419f0312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:41:29, skipping insertion in model container [2024-09-24 23:41:29,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:41:29" (3/3) ... [2024-09-24 23:41:29,734 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound50.c [2024-09-24 23:41:29,750 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:41:29,750 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:41:29,808 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:41:29,813 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@784d6a93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:41:29,814 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:41:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:41:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:41:29,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:41:29,826 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:41:29,827 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:41:29,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:29,832 INFO L85 PathProgramCache]: Analyzing trace with hash -615698490, now seen corresponding path program 1 times [2024-09-24 23:41:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:41:29,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802457121] [2024-09-24 23:41:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:29,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:41:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:29,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:41:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:29,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:41:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:29,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:41:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:30,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:41:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:30,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:41:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:41:30,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:41:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802457121] [2024-09-24 23:41:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802457121] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:41:30,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:41:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:41:30,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295321803] [2024-09-24 23:41:30,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:41:30,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:41:30,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:41:30,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:41:30,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:41:30,048 INFO L87 Difference]: Start difference. First operand has 30 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:41:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:41:30,074 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2024-09-24 23:41:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:41:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-24 23:41:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:41:30,086 INFO L225 Difference]: With dead ends: 54 [2024-09-24 23:41:30,086 INFO L226 Difference]: Without dead ends: 26 [2024-09-24 23:41:30,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:41:30,094 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:41:30,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:41:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-24 23:41:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-24 23:41:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:41:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-24 23:41:30,125 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2024-09-24 23:41:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:41:30,125 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-24 23:41:30,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-24 23:41:30,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-24 23:41:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-24 23:41:30,128 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:41:30,128 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:41:30,128 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:41:30,130 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:41:30,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1799814794, now seen corresponding path program 1 times [2024-09-24 23:41:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:41:30,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440800510] [2024-09-24 23:41:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:41:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:41:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876180068] [2024-09-24 23:41:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:30,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:41:30,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:41:30,185 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) [2024-09-24 23:41:30,196 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:41:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:30,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:41:30,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:41:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:41:30,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:41:30,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:41:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440800510] [2024-09-24 23:41:30,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:41:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876180068] [2024-09-24 23:41:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876180068] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:41:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:41:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:41:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518225756] [2024-09-24 23:41:30,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:41:30,414 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:41:30,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:41:30,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:41:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:41:30,417 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-24 23:41:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:41:30,471 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-09-24 23:41:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:41:30,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2024-09-24 23:41:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:41:30,473 INFO L225 Difference]: With dead ends: 36 [2024-09-24 23:41:30,473 INFO L226 Difference]: Without dead ends: 34 [2024-09-24 23:41:30,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:41:30,474 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:41:30,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:41:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-24 23:41:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-24 23:41:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:41:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-24 23:41:30,483 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 32 [2024-09-24 23:41:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:41:30,485 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-24 23:41:30,485 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-24 23:41:30,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-24 23:41:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-24 23:41:30,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:41:30,487 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:41:30,501 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:41:30,687 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 [2024-09-24 23:41:30,688 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:41:30,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1396019833, now seen corresponding path program 1 times [2024-09-24 23:41:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:41:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597978408] [2024-09-24 23:41:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:41:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:41:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:41:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:41:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:41:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:41:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:41:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:41:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:41:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597978408] [2024-09-24 23:41:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597978408] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:41:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328179011] [2024-09-24 23:41:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:31,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:41:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:41:31,112 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) [2024-09-24 23:41:31,113 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:41:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:41:31,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:41:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:41:31,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:41:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328179011] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:41:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:41:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-09-24 23:41:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295725533] [2024-09-24 23:41:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:41:31,352 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:41:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:41:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:41:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:41:31,353 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-24 23:41:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:41:31,399 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-24 23:41:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:41:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-09-24 23:41:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:41:31,401 INFO L225 Difference]: With dead ends: 41 [2024-09-24 23:41:31,401 INFO L226 Difference]: Without dead ends: 33 [2024-09-24 23:41:31,401 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:41:31,402 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:41:31,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:41:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-24 23:41:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-24 23:41:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-24 23:41:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-24 23:41:31,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 39 [2024-09-24 23:41:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:41:31,409 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-24 23:41:31,410 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-24 23:41:31,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-24 23:41:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-24 23:41:31,411 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:41:31,411 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:41:31,428 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:41:31,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:41:31,613 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:41:31,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:41:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1348056323, now seen corresponding path program 1 times [2024-09-24 23:41:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:41:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857978938] [2024-09-24 23:41:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:41:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:41:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71629792] [2024-09-24 23:41:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:41:31,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:41:31,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:41:31,651 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) [2024-09-24 23:41:31,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:41:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:41:31,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-24 23:41:31,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:41:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-24 23:41:31,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:41:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-24 23:41:36,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:41:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857978938] [2024-09-24 23:41:36,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:41:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71629792] [2024-09-24 23:41:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71629792] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:41:36,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:41:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2024-09-24 23:41:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363789667] [2024-09-24 23:41:36,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:41:36,085 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:41:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:41:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:41:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2024-09-24 23:41:36,087 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-24 23:41:44,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:41:56,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:00,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:04,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:08,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:12,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:12,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:42:12,688 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-09-24 23:42:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:42:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 39 [2024-09-24 23:42:12,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:42:12,692 INFO L225 Difference]: With dead ends: 51 [2024-09-24 23:42:12,692 INFO L226 Difference]: Without dead ends: 49 [2024-09-24 23:42:12,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2024-09-24 23:42:12,693 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:42:12,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 158 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2024-09-24 23:42:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-24 23:42:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-09-24 23:42:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:42:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-09-24 23:42:12,709 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 39 [2024-09-24 23:42:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:42:12,710 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-09-24 23:42:12,710 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-24 23:42:12,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:42:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-09-24 23:42:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-24 23:42:12,711 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:42:12,712 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:42:12,729 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-24 23:42:12,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:42:12,916 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:42:12,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:42:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash 319080884, now seen corresponding path program 1 times [2024-09-24 23:42:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:42:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78806094] [2024-09-24 23:42:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:42:12,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:42:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:42:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:42:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:42:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:42:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:42:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-24 23:42:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:42:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,318 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:42:13,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:42:13,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78806094] [2024-09-24 23:42:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78806094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:42:13,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947849031] [2024-09-24 23:42:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:42:13,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:42:13,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:42:13,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:42:13,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:42:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:42:13,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:42:13,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:42:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:42:21,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:42:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:42:21,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947849031] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:42:21,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:42:21,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-09-24 23:42:21,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520813604] [2024-09-24 23:42:21,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:42:21,938 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:42:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:42:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:42:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2024-09-24 23:42:21,939 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-24 23:42:25,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-24 23:42:30,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-24 23:42:34,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-24 23:42:38,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:42:42,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-24 23:42:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:42:42,295 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2024-09-24 23:42:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:42:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2024-09-24 23:42:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:42:42,298 INFO L225 Difference]: With dead ends: 51 [2024-09-24 23:42:42,298 INFO L226 Difference]: Without dead ends: 43 [2024-09-24 23:42:42,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2024-09-24 23:42:42,299 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:42:42,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2024-09-24 23:42:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-24 23:42:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-09-24 23:42:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:42:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-09-24 23:42:42,311 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 46 [2024-09-24 23:42:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:42:42,311 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-09-24 23:42:42,311 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-24 23:42:42,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:42:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-09-24 23:42:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-24 23:42:42,313 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:42:42,316 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:42:42,333 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:42:42,519 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:42:42,520 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:42:42,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:42:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -409552950, now seen corresponding path program 2 times [2024-09-24 23:42:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:42:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967781077] [2024-09-24 23:42:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:42:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:42:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:42:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256048469] [2024-09-24 23:42:42,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:42:42,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:42:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:42:42,572 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:42:42,573 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:42:42,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:42:42,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:42:42,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-24 23:42:42,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:42:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-24 23:42:43,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:42:59,508 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0) (* 18446744073709551615 c_main_~y~0) 1) 18446744073709551616) 0)) (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) c_main_~z~0) 18446744073709551616) 0)) is different from true [2024-09-24 23:43:19,729 WARN L876 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) c_main_~z~0) 18446744073709551616) 0)) (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0)) is different from true [2024-09-24 23:43:25,343 WARN L293 SmtUtils]: Spent 5.61s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-24 23:43:50,237 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-24 23:43:55,472 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-24 23:44:17,092 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-24 23:44:21,097 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-24 23:44:39,034 WARN L293 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-24 23:44:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 26 not checked. [2024-09-24 23:44:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:44:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967781077] [2024-09-24 23:44:39,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:44:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256048469] [2024-09-24 23:44:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256048469] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:44:39,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:44:39,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-09-24 23:44:39,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677985615] [2024-09-24 23:44:39,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:44:39,095 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-24 23:44:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:44:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-24 23:44:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=284, Unknown=5, NotChecked=148, Total=506 [2024-09-24 23:44:39,098 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-24 23:44:49,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:44:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:44:57,518 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-24 23:44:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-24 23:44:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) Word has length 60 [2024-09-24 23:44:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:44:57,519 INFO L225 Difference]: With dead ends: 47 [2024-09-24 23:44:57,519 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:44:57,519 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=88, Invalid=343, Unknown=5, NotChecked=164, Total=600 [2024-09-24 23:44:57,520 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:44:57,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 215 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 208 Invalid, 1 Unknown, 169 Unchecked, 4.3s Time] [2024-09-24 23:44:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:44:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:44:57,521 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) [2024-09-24 23:44:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:44:57,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-24 23:44:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:44:57,521 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:44:57,522 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 20 states have internal predecessors, (43), 13 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 11 states have call predecessors, (17), 11 states have call successors, (17) [2024-09-24 23:44:57,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:44:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:44:57,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:44:57,524 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:44:57,537 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-24 23:44:57,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:44:57,728 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-09-24 23:44:57,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:45:15,794 WARN L293 SmtUtils]: Spent 18.00s on a formula simplification. DAG size of input: 51 DAG size of output: 23 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-24 23:45:28,377 WARN L293 SmtUtils]: Spent 12.58s on a formula simplification. DAG size of input: 50 DAG size of output: 23 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-24 23:45:41,011 WARN L293 SmtUtils]: Spent 12.62s on a formula simplification. DAG size of input: 50 DAG size of output: 23 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-24 23:45:45,485 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:45:45,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:45:45 BoogieIcfgContainer [2024-09-24 23:45:45,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:45:45,507 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:45:45,507 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:45:45,507 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:45:45,507 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:41:29" (3/4) ... [2024-09-24 23:45:45,509 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:45:45,563 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:45:45,564 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:45:45,564 INFO L158 Benchmark]: Toolchain (without parser) took 256465.98ms. Allocated memory is still 172.0MB. Free memory was 144.1MB in the beginning and 85.8MB in the end (delta: 58.3MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,564 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:45:45,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.07ms. Allocated memory is still 172.0MB. Free memory was 144.1MB in the beginning and 132.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.48ms. Allocated memory is still 172.0MB. Free memory was 132.6MB in the beginning and 131.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,565 INFO L158 Benchmark]: Boogie Preprocessor took 32.68ms. Allocated memory is still 172.0MB. Free memory was 131.5MB in the beginning and 130.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:45:45,566 INFO L158 Benchmark]: RCFGBuilder took 356.03ms. Allocated memory is still 172.0MB. Free memory was 130.5MB in the beginning and 116.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,566 INFO L158 Benchmark]: TraceAbstraction took 255780.52ms. Allocated memory is still 172.0MB. Free memory was 116.8MB in the beginning and 87.9MB in the end (delta: 29.0MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,567 INFO L158 Benchmark]: Witness Printer took 56.99ms. Allocated memory is still 172.0MB. Free memory was 87.9MB in the beginning and 85.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:45:45,568 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 115.3MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.07ms. Allocated memory is still 172.0MB. Free memory was 144.1MB in the beginning and 132.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.48ms. Allocated memory is still 172.0MB. Free memory was 132.6MB in the beginning and 131.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.68ms. Allocated memory is still 172.0MB. Free memory was 131.5MB in the beginning and 130.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 356.03ms. Allocated memory is still 172.0MB. Free memory was 130.5MB in the beginning and 116.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 255780.52ms. Allocated memory is still 172.0MB. Free memory was 116.8MB in the beginning and 87.9MB in the end (delta: 29.0MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 56.99ms. Allocated memory is still 172.0MB. Free memory was 87.9MB in the beginning and 85.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 207.9s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 75.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 49.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 48.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 169 IncrementalHoareTripleChecker+Unchecked, 616 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 145 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 425 GetRequests, 354 SyntacticMatches, 12 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 59.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 46, 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 130.5s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 467 ConstructedInterpolants, 1 QuantifiedInterpolants, 1813 SizeOfPredicates, 5 NumberOfNonLiveVariables, 546 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 351/425 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((((__int128) 18446744073709551615U * z) * y) + z) + ((__int128) ((long long) z * z) * x)) + (((__int128) 18446744073709551615U * z) * x)) % ((unsigned __int128) 1 << 64)) == 0) && (1 <= z)) && (((((((__int128) z * x) + ((unsigned __int128) 18446744073709551615U * x)) + ((unsigned __int128) 18446744073709551615U * y)) + 1) % ((unsigned __int128) 1 << 64)) == 0)) && (z <= 50)) - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:45:45,707 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE