./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 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/geo3-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 e8ba7d590cbb780f326a15a59f36cf1896b82ce2465f6328eea27dcc3a24abff --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:05:25,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:05:25,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:05:25,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:05:25,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:05:25,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:05:25,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:05:25,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:05:25,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:05:25,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:05:25,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:05:25,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:05:25,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:05:25,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:05:25,369 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:05:25,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:05:25,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:05:25,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:05:25,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:05:25,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:05:25,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:05:25,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:05:25,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:05:25,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:05:25,375 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:05:25,375 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:05:25,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:05:25,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:05:25,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:05:25,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:05:25,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:05:25,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:05:25,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:05:25,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:05:25,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:05:25,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:05:25,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:05:25,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:05:25,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:05:25,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:05:25,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:05:25,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:05:25,385 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 -> e8ba7d590cbb780f326a15a59f36cf1896b82ce2465f6328eea27dcc3a24abff 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 [2024-09-25 11:05:25,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:05:25,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:05:25,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:05:25,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:05:25,715 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:05:25,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c [2024-09-25 11:05:27,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:05:27,263 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:05:27,263 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound50.c [2024-09-25 11:05:27,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a120245f6/eaa77defc8884af086c4ce89251d5e60/FLAG7e66436b9 [2024-09-25 11:05:27,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a120245f6/eaa77defc8884af086c4ce89251d5e60 [2024-09-25 11:05:27,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:05:27,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:05:27,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:05:27,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:05:27,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:05:27,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a35cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27, skipping insertion in model container [2024-09-25 11:05:27,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:05:27,812 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/geo3-ll_valuebound50.c[524,537] [2024-09-25 11:05:27,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:05:27,844 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:05:27,854 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/geo3-ll_valuebound50.c[524,537] [2024-09-25 11:05:27,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:05:27,876 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:05:27,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27 WrapperNode [2024-09-25 11:05:27,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:05:27,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:05:27,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:05:27,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:05:27,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,898 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:05:27,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:05:27,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:05:27,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:05:27,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:05:27,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,933 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]. [2024-09-25 11:05:27,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:05:27,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:05:27,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:05:27,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:05:27,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (1/1) ... [2024-09-25 11:05:27,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:05:27,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:05:27,989 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) [2024-09-25 11:05:27,992 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 [2024-09-25 11:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:05:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 11:05:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 11:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:05:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:05:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:05:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:05:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:05:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:05:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 11:05:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 11:05:28,103 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:05:28,105 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:05:28,286 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-25 11:05:28,286 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:05:28,316 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:05:28,317 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 11:05:28,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:28 BoogieIcfgContainer [2024-09-25 11:05:28,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:05:28,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:05:28,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:05:28,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:05:28,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:05:27" (1/3) ... [2024-09-25 11:05:28,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742132d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:28, skipping insertion in model container [2024-09-25 11:05:28,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:05:27" (2/3) ... [2024-09-25 11:05:28,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742132d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:05:28, skipping insertion in model container [2024-09-25 11:05:28,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:05:28" (3/3) ... [2024-09-25 11:05:28,328 INFO L112 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound50.c [2024-09-25 11:05:28,345 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:05:28,346 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:05:28,411 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:05:28,418 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;@370f3186, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:05:28,419 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:05:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 11:05:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-25 11:05:28,431 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:05:28,431 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:05:28,432 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:05:28,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:05:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash -839968477, now seen corresponding path program 1 times [2024-09-25 11:05:28,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:05:28,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652873016] [2024-09-25 11:05:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:05:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:05:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:05:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:05:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:05:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 11:05:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:05:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:05:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652873016] [2024-09-25 11:05:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652873016] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:05:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:05:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 11:05:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817258975] [2024-09-25 11:05:28,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:05:28,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 11:05:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:05:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 11:05:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:05:28,694 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:05:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:05:28,728 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2024-09-25 11:05:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 11:05:28,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-25 11:05:28,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:05:28,738 INFO L225 Difference]: With dead ends: 52 [2024-09-25 11:05:28,738 INFO L226 Difference]: Without dead ends: 25 [2024-09-25 11:05:28,741 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:05:28,746 INFO L434 NwaCegarLoop]: 30 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, 30 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 [2024-09-25 11:05:28,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:05:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-25 11:05:28,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-25 11:05:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 11:05:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-09-25 11:05:28,787 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 28 [2024-09-25 11:05:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:05:28,787 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-09-25 11:05:28,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:05:28,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:05:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-09-25 11:05:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-25 11:05:28,791 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:05:28,791 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:05:28,791 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:05:28,792 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:05:28,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:05:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1024519709, now seen corresponding path program 1 times [2024-09-25 11:05:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:05:28,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021902121] [2024-09-25 11:05:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:05:28,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:05:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:05:28,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552784282] [2024-09-25 11:05:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:05:28,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:05:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:05:28,843 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) [2024-09-25 11:05:28,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 11:05:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:28,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 11:05:28,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:05:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:05:29,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:05:29,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:05:29,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021902121] [2024-09-25 11:05:29,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:05:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552784282] [2024-09-25 11:05:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552784282] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:05:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:05:29,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:05:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793152440] [2024-09-25 11:05:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:05:29,119 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:05:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:05:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:05:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:05:29,122 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:05:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:05:29,176 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-09-25 11:05:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:05:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-09-25 11:05:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:05:29,178 INFO L225 Difference]: With dead ends: 35 [2024-09-25 11:05:29,178 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 11:05:29,179 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:05:29,180 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:05:29,180 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 88 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:05:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 11:05:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 11:05:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:05:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-25 11:05:29,192 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 28 [2024-09-25 11:05:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:05:29,193 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-25 11:05:29,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:05:29,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:05:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-25 11:05:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-25 11:05:29,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:05:29,197 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:05:29,213 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 11:05:29,397 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 [2024-09-25 11:05:29,398 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:05:29,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:05:29,399 INFO L85 PathProgramCache]: Analyzing trace with hash 535256771, now seen corresponding path program 1 times [2024-09-25 11:05:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:05:29,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401605714] [2024-09-25 11:05:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:05:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:05:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:05:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986708978] [2024-09-25 11:05:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:05:29,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:05:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:05:29,460 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) [2024-09-25 11:05:29,461 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 11:05:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:05:29,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-25 11:05:29,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:05:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:05:29,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:05:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:05:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:05:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401605714] [2024-09-25 11:05:34,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:05:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986708978] [2024-09-25 11:05:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986708978] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:05:34,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:05:34,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-09-25 11:05:34,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809077212] [2024-09-25 11:05:34,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:05:34,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 11:05:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:05:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 11:05:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2024-09-25 11:05:34,436 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-25 11:05:38,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-09-25 11:05:46,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:05:51,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:05:55,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:05:59,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:06:03,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:06:07,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:06:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:06:07,113 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2024-09-25 11:06:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:06:07,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 35 [2024-09-25 11:06:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:06:07,115 INFO L225 Difference]: With dead ends: 50 [2024-09-25 11:06:07,115 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 11:06:07,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2024-09-25 11:06:07,117 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2024-09-25 11:06:07,118 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 158 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 28.6s Time] [2024-09-25 11:06:07,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 11:06:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 11:06:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 11:06:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-09-25 11:06:07,139 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 35 [2024-09-25 11:06:07,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:06:07,139 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-09-25 11:06:07,140 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-25 11:06:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:06:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-09-25 11:06:07,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-09-25 11:06:07,142 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:06:07,142 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:06:07,162 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 11:06:07,348 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 [2024-09-25 11:06:07,349 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:06:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:06:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash -549742109, now seen corresponding path program 2 times [2024-09-25 11:06:07,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:06:07,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612230378] [2024-09-25 11:06:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:06:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:06:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:06:07,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135427947] [2024-09-25 11:06:07,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:06:07,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:06:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:06:07,423 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) [2024-09-25 11:06:07,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 11:06:07,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:06:07,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:06:07,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-25 11:06:07,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:06:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-25 11:06:08,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:06:25,407 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~x~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0)) 18446744073709551616) 0) (not (= (mod (+ (* c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0) (* 18446744073709551615 c_main_~x~0) c_main_~a~0) 18446744073709551616) 0))) is different from true [2024-09-25 11:06:46,077 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) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~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_~a~0 c_main_~z~0) (* 18446744073709551615 c_main_~x~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-25 11:06:51,721 WARN L293 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-25 11:07:13,818 WARN L293 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-25 11:07:17,891 WARN L876 $PredicateComparison]: unable to prove that (or (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_~az~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~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 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_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0)) is different from true [2024-09-25 11:07:46,436 WARN L876 $PredicateComparison]: unable to prove that (or (= (mod (+ (* c_main_~a~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) (* 18446744073709551615 c_main_~y~0 c_main_~az~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) (* 18446744073709551615 c_main_~x~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* 18446744073709551615 c_main_~y~0 c_main_~az~0 c_main_~z~0 c_main_~z~0 c_main_~z~0) (* c_main_~a~0 c_main_~z~0 c_main_~z~0 c_main_~z~0)) 18446744073709551616) 0))) is different from true [2024-09-25 11:07:52,294 WARN L293 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-25 11:08:04,317 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-25 11:08:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 26 not checked. [2024-09-25 11:08:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:08:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612230378] [2024-09-25 11:08:08,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:08:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135427947] [2024-09-25 11:08:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135427947] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:08:08,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:08:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2024-09-25 11:08:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864095972] [2024-09-25 11:08:08,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:08:08,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 11:08:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:08:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 11:08:08,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=284, Unknown=5, NotChecked=148, Total=506 [2024-09-25 11:08:08,495 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-25 11:08:22,876 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 [] [2024-09-25 11:08:35,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:39,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:43,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:47,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:51,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:55,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 11:08:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:08:55,118 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2024-09-25 11:08:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 11:08:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) Word has length 56 [2024-09-25 11:08:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:08:55,124 INFO L225 Difference]: With dead ends: 61 [2024-09-25 11:08:55,124 INFO L226 Difference]: Without dead ends: 56 [2024-09-25 11:08:55,127 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=99, Invalid=372, Unknown=7, NotChecked=172, Total=650 [2024-09-25 11:08:55,127 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 20 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2024-09-25 11:08:55,128 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 240 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 223 Invalid, 7 Unknown, 237 Unchecked, 28.7s Time] [2024-09-25 11:08:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-25 11:08:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-25 11:08:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-25 11:08:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-09-25 11:08:55,150 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 56 [2024-09-25 11:08:55,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:08:55,151 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-09-25 11:08:55,151 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 21 states have internal predecessors, (45), 13 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-09-25 11:08:55,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:08:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-09-25 11:08:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-25 11:08:55,153 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:08:55,153 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:08:55,163 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 11:08:55,357 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 [2024-09-25 11:08:55,358 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:08:55,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:08:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1596035779, now seen corresponding path program 3 times [2024-09-25 11:08:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:08:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409890809] [2024-09-25 11:08:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:08:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:08:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:08:55,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741046704] [2024-09-25 11:08:55,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:08:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:08:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:08:55,459 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) [2024-09-25 11:08:55,460 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process