./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.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/prodbin-ll_valuebound100.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 8bd25fcd8e8d81d9ce03f11651b22e7d6f0ec0da3b511f7ebe00128a9109f319 --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 11:18:55,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:18:55,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:18:55,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:18:55,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:18:55,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:18:55,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:18:55,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:18:55,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:18:55,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:18:55,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:18:55,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:18:55,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:18:55,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:18:55,910 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:18:55,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:18:55,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:18:55,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:18:55,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:18:55,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:18:55,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:18:55,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:18:55,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:18:55,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:18:55,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:18:55,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:18:55,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:18:55,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:18:55,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:18:55,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:18:55,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:18:55,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:18:55,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:18:55,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:18:55,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:18:55,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:18:55,919 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:18:55,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:18:55,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:18:55,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:18:55,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:18:55,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:18:55,922 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 -> 8bd25fcd8e8d81d9ce03f11651b22e7d6f0ec0da3b511f7ebe00128a9109f319 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 11:18:56,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:18:56,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:18:56,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:18:56,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:18:56,259 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:18:56,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c [2024-09-25 11:18:57,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:18:57,971 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:18:57,972 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound100.c [2024-09-25 11:18:57,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ff98c0524/79795f67a7714f0db8f496efc6cf08ee/FLAGec670d90c [2024-09-25 11:18:57,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ff98c0524/79795f67a7714f0db8f496efc6cf08ee [2024-09-25 11:18:57,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:18:57,995 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:18:57,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:18:57,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:18:58,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:18:58,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:57" (1/1) ... [2024-09-25 11:18:58,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d27ce82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58, skipping insertion in model container [2024-09-25 11:18:58,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:57" (1/1) ... [2024-09-25 11:18:58,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:18:58,175 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/prodbin-ll_valuebound100.c[537,550] [2024-09-25 11:18:58,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:18:58,208 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:18:58,218 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/prodbin-ll_valuebound100.c[537,550] [2024-09-25 11:18:58,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:18:58,249 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:18:58,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58 WrapperNode [2024-09-25 11:18:58,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:18:58,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:18:58,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:18:58,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:18:58,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,268 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:18:58,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:18:58,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:18:58,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:18:58,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:18:58,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,294 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 11:18:58,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:18:58,310 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:18:58,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:18:58,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:18:58,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (1/1) ... [2024-09-25 11:18:58,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:18:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:58,345 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 11:18:58,352 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 11:18:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:18:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 11:18:58,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 11:18:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:18:58,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:18:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:18:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:18:58,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:18:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:18:58,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:18:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 11:18:58,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 11:18:58,455 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:18:58,458 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:18:58,613 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 11:18:58,614 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:18:58,636 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:18:58,637 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 11:18:58,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:58 BoogieIcfgContainer [2024-09-25 11:18:58,637 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:18:58,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:18:58,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:18:58,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:18:58,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:57" (1/3) ... [2024-09-25 11:18:58,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258a617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:58, skipping insertion in model container [2024-09-25 11:18:58,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:58" (2/3) ... [2024-09-25 11:18:58,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258a617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:58, skipping insertion in model container [2024-09-25 11:18:58,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:58" (3/3) ... [2024-09-25 11:18:58,644 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound100.c [2024-09-25 11:18:58,659 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:18:58,659 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:18:58,716 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:18:58,724 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;@27d56c8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:18:58,724 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:18:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 11:18:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:18:58,739 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:58,740 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] [2024-09-25 11:18:58,740 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108722, now seen corresponding path program 1 times [2024-09-25 11:18:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091990410] [2024-09-25 11:18:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:58,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:18:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:58,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:18:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:58,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:18:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:58,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:18:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:58,963 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 11:18:58,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:58,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091990410] [2024-09-25 11:18:58,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091990410] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:18:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:18:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 11:18:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690260727] [2024-09-25 11:18:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:18:58,971 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 11:18:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 11:18:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:18:58,996 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11:18:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:59,027 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2024-09-25 11:18:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 11:18:59,032 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, (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 27 [2024-09-25 11:18:59,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:59,037 INFO L225 Difference]: With dead ends: 54 [2024-09-25 11:18:59,037 INFO L226 Difference]: Without dead ends: 26 [2024-09-25 11:18:59,039 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 11:18:59,042 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 [2024-09-25 11:18:59,043 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] [2024-09-25 11:18:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-25 11:18:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-25 11:18:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 11:18:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-09-25 11:18:59,076 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 27 [2024-09-25 11:18:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:59,077 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-09-25 11:18:59,077 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, (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 11:18:59,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-09-25 11:18:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:18:59,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:59,080 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] [2024-09-25 11:18:59,080 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:18:59,080 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:59,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1085938704, now seen corresponding path program 1 times [2024-09-25 11:18:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210370015] [2024-09-25 11:18:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:18:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184366244] [2024-09-25 11:18:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:59,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:18:59,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:59,116 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 11:18:59,118 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 11:18:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:59,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 11:18:59,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:18:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:18:59,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:18:59,572 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 11:18:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210370015] [2024-09-25 11:18:59,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:18:59,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184366244] [2024-09-25 11:18:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184366244] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:18:59,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:18:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-25 11:18:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349656871] [2024-09-25 11:18:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:18:59,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:18:59,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:18:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:18:59,582 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, (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 11:18:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:59,683 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-09-25 11:18:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:18:59,684 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, (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 27 [2024-09-25 11:18:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:59,685 INFO L225 Difference]: With dead ends: 37 [2024-09-25 11:18:59,685 INFO L226 Difference]: Without dead ends: 35 [2024-09-25 11:18:59,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:18:59,687 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:18:59,687 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:18:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-25 11:18:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-09-25 11:18:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:18:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-25 11:18:59,696 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 27 [2024-09-25 11:18:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:59,698 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-25 11:18:59,698 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, (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 11:18:59,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-25 11:18:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-25 11:18:59,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:59,700 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:18:59,718 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 11:18:59,900 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 11:18:59,901 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:59,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1368497365, now seen corresponding path program 1 times [2024-09-25 11:18:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:59,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215658846] [2024-09-25 11:18:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:59,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:19:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:19:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:19:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:19:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 11:19:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:19:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215658846] [2024-09-25 11:19:00,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215658846] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:19:00,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:19:00,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-25 11:19:00,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880426935] [2024-09-25 11:19:00,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:19:00,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 11:19:00,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:00,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 11:19:00,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-25 11:19:00,153 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:19:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:00,226 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-09-25 11:19:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 11:19:00,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-25 11:19:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:00,228 INFO L225 Difference]: With dead ends: 42 [2024-09-25 11:19:00,228 INFO L226 Difference]: Without dead ends: 35 [2024-09-25 11:19:00,229 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 11:19:00,230 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:00,230 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:19:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-25 11:19:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-09-25 11:19:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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 11:19:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-09-25 11:19:00,243 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2024-09-25 11:19:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:00,244 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-09-25 11:19:00,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:19:00,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-09-25 11:19:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-25 11:19:00,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:00,246 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, 1] [2024-09-25 11:19:00,246 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-25 11:19:00,246 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:00,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -65395240, now seen corresponding path program 1 times [2024-09-25 11:19:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:00,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212582173] [2024-09-25 11:19:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:00,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114580586] [2024-09-25 11:19:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:00,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:00,288 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 11:19:00,290 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 11:19:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:00,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 11:19:00,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:00,636 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 11:19:00,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:19:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212582173] [2024-09-25 11:19:02,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114580586] [2024-09-25 11:19:02,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114580586] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:19:02,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:19:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2024-09-25 11:19:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806078460] [2024-09-25 11:19:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:19:02,016 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 11:19:02,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 11:19:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:19:02,017 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:19:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:02,232 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-09-25 11:19:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 11:19:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-09-25 11:19:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:02,234 INFO L225 Difference]: With dead ends: 45 [2024-09-25 11:19:02,235 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 11:19:02,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:19:02,236 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:02,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:19:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 11:19:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-25 11:19:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 11:19:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-09-25 11:19:02,246 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2024-09-25 11:19:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:02,246 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-09-25 11:19:02,247 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-25 11:19:02,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-09-25 11:19:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-25 11:19:02,248 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:02,248 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, 1] [2024-09-25 11:19:02,264 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 11:19:02,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:02,449 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:02,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1709612122, now seen corresponding path program 1 times [2024-09-25 11:19:02,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:02,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847112552] [2024-09-25 11:19:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:02,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:02,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691115907] [2024-09-25 11:19:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:02,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:02,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:02,475 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 11:19:02,476 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 11:19:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:02,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-25 11:19:02,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:19:02,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:19:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847112552] [2024-09-25 11:19:03,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691115907] [2024-09-25 11:19:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691115907] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:19:03,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:19:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-25 11:19:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718982371] [2024-09-25 11:19:03,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:03,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 11:19:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 11:19:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:19:03,479 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-25 11:19:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:04,127 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-09-25 11:19:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:19:04,127 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2024-09-25 11:19:04,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:04,130 INFO L225 Difference]: With dead ends: 67 [2024-09-25 11:19:04,130 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 11:19:04,131 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2024-09-25 11:19:04,131 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:04,132 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 161 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 11:19:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 11:19:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 11:19:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:19:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-09-25 11:19:04,163 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 36 [2024-09-25 11:19:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:04,163 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-09-25 11:19:04,163 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-25 11:19:04,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-09-25 11:19:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-25 11:19:04,166 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:04,166 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-09-25 11:19:04,183 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 11:19:04,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:04,371 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:04,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:04,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068381, now seen corresponding path program 1 times [2024-09-25 11:19:04,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:04,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630870933] [2024-09-25 11:19:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:04,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233336370] [2024-09-25 11:19:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:04,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:04,408 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 11:19:04,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 11:19:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:04,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:19:04,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:19:04,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:19:04,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630870933] [2024-09-25 11:19:04,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:04,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233336370] [2024-09-25 11:19:04,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233336370] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:19:04,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:19:04,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-25 11:19:04,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157095793] [2024-09-25 11:19:04,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:04,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 11:19:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 11:19:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:19:04,607 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 11:19:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:04,751 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-25 11:19:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:19:04,752 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 42 [2024-09-25 11:19:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:04,755 INFO L225 Difference]: With dead ends: 67 [2024-09-25 11:19:04,755 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 11:19:04,755 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:19:04,758 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:04,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:19:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 11:19:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-09-25 11:19:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:19:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2024-09-25 11:19:04,783 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 42 [2024-09-25 11:19:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:04,783 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2024-09-25 11:19:04,785 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-25 11:19:04,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2024-09-25 11:19:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-25 11:19:04,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:04,787 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:19:04,805 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-25 11:19:04,987 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:04,988 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -455011438, now seen corresponding path program 1 times [2024-09-25 11:19:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621970012] [2024-09-25 11:19:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:05,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498180938] [2024-09-25 11:19:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:05,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:05,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:05,021 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) [2024-09-25 11:19:05,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 11:19:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:19:05,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 11:19:05,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 11:19:05,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 11:19:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621970012] [2024-09-25 11:19:13,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498180938] [2024-09-25 11:19:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498180938] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:19:13,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:19:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2024-09-25 11:19:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837471743] [2024-09-25 11:19:13,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:13,767 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 11:19:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 11:19:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-09-25 11:19:13,768 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-25 11:19:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:20,846 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2024-09-25 11:19:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 11:19:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 45 [2024-09-25 11:19:20,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:20,847 INFO L225 Difference]: With dead ends: 93 [2024-09-25 11:19:20,847 INFO L226 Difference]: Without dead ends: 91 [2024-09-25 11:19:20,848 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:19:20,848 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:20,849 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 253 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-09-25 11:19:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-25 11:19:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-09-25 11:19:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 67 states have internal predecessors, (75), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 11:19:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2024-09-25 11:19:20,881 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 45 [2024-09-25 11:19:20,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:20,881 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2024-09-25 11:19:20,882 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 14 states have internal predecessors, (32), 7 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-25 11:19:20,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:20,882 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2024-09-25 11:19:20,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-25 11:19:20,884 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:20,884 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:19:20,902 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 11:19:21,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 11:19:21,088 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:21,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 992859484, now seen corresponding path program 2 times [2024-09-25 11:19:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770092576] [2024-09-25 11:19:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002678441] [2024-09-25 11:19:21,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:19:21,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:21,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:21,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:19:21,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 11:19:21,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:19:21,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:19:21,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-25 11:19:21,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:19:21,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-25 11:19:23,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770092576] [2024-09-25 11:19:23,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002678441] [2024-09-25 11:19:23,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002678441] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:19:23,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:19:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2024-09-25 11:19:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217325909] [2024-09-25 11:19:23,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:23,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 11:19:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 11:19:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:19:23,517 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-25 11:19:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:26,883 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2024-09-25 11:19:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 11:19:26,884 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2024-09-25 11:19:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:26,886 INFO L225 Difference]: With dead ends: 128 [2024-09-25 11:19:26,887 INFO L226 Difference]: Without dead ends: 126 [2024-09-25 11:19:26,888 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2024-09-25 11:19:26,888 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:26,889 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 229 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 11:19:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-09-25 11:19:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-09-25 11:19:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 93 states have (on average 1.1612903225806452) internal successors, (108), 96 states have internal predecessors, (108), 22 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 11:19:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 151 transitions. [2024-09-25 11:19:26,945 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 151 transitions. Word has length 54 [2024-09-25 11:19:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:26,948 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 151 transitions. [2024-09-25 11:19:26,948 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-09-25 11:19:26,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 151 transitions. [2024-09-25 11:19:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-25 11:19:26,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:26,949 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:19:26,968 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 11:19:27,150 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:27,150 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:27,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1692331952, now seen corresponding path program 3 times [2024-09-25 11:19:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112282977] [2024-09-25 11:19:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:27,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652593354] [2024-09-25 11:19:27,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:19:27,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:27,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:19:27,204 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 11:19:27,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 11:19:27,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:19:27,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 11:19:27,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-25 11:19:28,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112282977] [2024-09-25 11:19:28,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652593354] [2024-09-25 11:19:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652593354] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:19:28,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:19:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-25 11:19:28,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959159970] [2024-09-25 11:19:28,544 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:28,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 11:19:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:28,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 11:19:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-09-25 11:19:28,545 INFO L87 Difference]: Start difference. First operand 126 states and 151 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:19:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:30,138 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2024-09-25 11:19:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 11:19:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-09-25 11:19:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:30,139 INFO L225 Difference]: With dead ends: 166 [2024-09-25 11:19:30,139 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 11:19:30,140 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:19:30,141 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:30,141 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 214 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 11:19:30,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 11:19:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-09-25 11:19:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.024390243902439) internal successors, (42), 42 states have internal predecessors, (42), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 11:19:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-09-25 11:19:30,157 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 63 [2024-09-25 11:19:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:30,158 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-09-25 11:19:30,158 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:19:30,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-09-25 11:19:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-25 11:19:30,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:30,160 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:19:30,174 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 11:19:30,360 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:30,360 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:30,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:30,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1255090726, now seen corresponding path program 2 times [2024-09-25 11:19:30,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:30,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231508867] [2024-09-25 11:19:30,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:30,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338544883] [2024-09-25 11:19:30,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:19:30,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:30,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:30,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:19:30,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 11:19:30,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:19:30,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:19:30,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-09-25 11:19:30,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:19:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 11:19:33,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:19:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:19:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231508867] [2024-09-25 11:19:56,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:19:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338544883] [2024-09-25 11:19:56,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338544883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:19:56,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:19:56,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-09-25 11:19:56,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851793654] [2024-09-25 11:19:56,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 11:19:56,732 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 11:19:56,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:19:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 11:19:56,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-09-25 11:19:56,734 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:19:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:19:57,637 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2024-09-25 11:19:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 11:19:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 72 [2024-09-25 11:19:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:19:57,638 INFO L225 Difference]: With dead ends: 77 [2024-09-25 11:19:57,638 INFO L226 Difference]: Without dead ends: 75 [2024-09-25 11:19:57,639 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 11:19:57,639 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 11:19:57,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 391 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 11:19:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-25 11:19:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-09-25 11:19:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-25 11:19:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-09-25 11:19:57,665 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 72 [2024-09-25 11:19:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:19:57,665 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-09-25 11:19:57,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:19:57,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-09-25 11:19:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-09-25 11:19:57,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:19:57,667 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:19:57,679 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 11:19:57,867 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:57,868 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:19:57,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:19:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1793279440, now seen corresponding path program 3 times [2024-09-25 11:19:57,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:19:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848102651] [2024-09-25 11:19:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:19:57,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:19:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:19:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844974465] [2024-09-25 11:19:57,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:19:57,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:19:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:19:57,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:19:57,935 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 11:19:57,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-09-25 11:19:57,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:19:57,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-25 11:19:58,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:20:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 29 proven. 91 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-25 11:20:00,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:20:27,235 WARN L293 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 319 DAG size of output: 317 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-25 11:21:29,457 WARN L293 SmtUtils]: Spent 37.22s on a formula simplification. DAG size of input: 625 DAG size of output: 623 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-25 11:22:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:22:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848102651] [2024-09-25 11:22:32,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:22:32,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844974465] [2024-09-25 11:22:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844974465] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:22:32,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:22:32,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2024-09-25 11:22:32,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732112471] [2024-09-25 11:22:32,213 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 11:22:32,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 11:22:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:22:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 11:22:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 11:22:32,215 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-25 11:22:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:22:34,533 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2024-09-25 11:22:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 11:22:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 81 [2024-09-25 11:22:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:22:34,534 INFO L225 Difference]: With dead ends: 83 [2024-09-25 11:22:34,534 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:22:34,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 53.0s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 11:22:34,535 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-09-25 11:22:34,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 393 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-09-25 11:22:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:22:34,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:22:34,536 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) [2024-09-25 11:22:34,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:22:34,537 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2024-09-25 11:22:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:22:34,537 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:22:34,537 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 21 states have internal predecessors, (44), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-09-25 11:22:34,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:22:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:22:34,537 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:22:34,540 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:22:34,554 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 11:22:34,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 11:22:34,744 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1] [2024-09-25 11:22:34,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:22:50,827 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:22:50,842 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,843 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,844 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,845 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:22:50,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:22:50 BoogieIcfgContainer [2024-09-25 11:22:50,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:22:50,847 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:22:50,847 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:22:50,847 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:22:50,847 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:58" (3/4) ... [2024-09-25 11:22:50,849 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:22:50,905 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:22:50,906 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:22:50,907 INFO L158 Benchmark]: Toolchain (without parser) took 232911.02ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 47.6MB in the beginning and 161.8MB in the end (delta: -114.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,907 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:22:50,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.59ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 55.8MB in the end (delta: -8.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.72ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 54.5MB in the end (delta: 983.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,907 INFO L158 Benchmark]: Boogie Preprocessor took 39.55ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 52.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:22:50,908 INFO L158 Benchmark]: RCFGBuilder took 327.47ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 40.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,909 INFO L158 Benchmark]: TraceAbstraction took 232207.01ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 39.8MB in the beginning and 163.9MB in the end (delta: -124.1MB). Peak memory consumption was 103.8MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,909 INFO L158 Benchmark]: Witness Printer took 58.98ms. Allocated memory is still 195.0MB. Free memory was 163.9MB in the beginning and 161.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:22:50,911 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 52.4MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.59ms. Allocated memory is still 75.5MB. Free memory was 47.4MB in the beginning and 55.8MB in the end (delta: -8.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.72ms. Allocated memory is still 75.5MB. Free memory was 55.5MB in the beginning and 54.5MB in the end (delta: 983.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.55ms. Allocated memory is still 75.5MB. Free memory was 54.5MB in the beginning and 52.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.47ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 40.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 232207.01ms. Allocated memory was 75.5MB in the beginning and 195.0MB in the end (delta: 119.5MB). Free memory was 39.8MB in the beginning and 163.9MB in the end (delta: -124.1MB). Peak memory consumption was 103.8MB. Max. memory is 16.1GB. * Witness Printer took 58.98ms. Allocated memory is still 195.0MB. Free memory was 163.9MB in the beginning and 161.8MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * 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: 15]: 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: 216.0s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 2080 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1822 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2508 IncrementalHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 258 mSDtfsCounter, 2508 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 864 GetRequests, 648 SyntacticMatches, 27 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 83.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=8, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 196.2s InterpolantComputationTime, 972 NumberOfCodeBlocks, 963 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 739 ConstructedInterpolants, 16 QuantifiedInterpolants, 7017 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1063 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 472/695 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: 34]: Loop Invariant Derived loop invariant: (((((0 <= y) && ((z + ((__int128) y * x)) == ((long long) b * a))) && (a <= 100)) && (0 <= a)) && (1 <= b)) - ProcedureContractResult [Line: 9]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 12]: 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! [2024-09-25 11:22:51,127 WARN L435 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-09-25 11:22:51,217 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE