./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/phases_1-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/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/loop-acceleration/phases_1-1.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 bc900b1bfcaecf91bc89637deaef4e1ddf2476faf43fa7e6f1e197c315ae3982 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 11:20:09,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:20:09,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:20:09,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:20:09,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:20:09,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:20:09,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:20:09,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:20:09,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:20:09,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:20:09,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:20:09,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:20:09,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:20:09,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:20:09,144 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:20:09,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:20:09,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:20:09,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:20:09,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:20:09,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:20:09,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:20:09,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:20:09,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:20:09,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:20:09,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:20:09,149 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:20:09,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:20:09,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:20:09,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:20:09,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:20:09,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:20:09,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:20:09,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:20:09,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:20:09,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:20:09,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:20:09,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:20:09,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:20:09,152 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:20:09,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:20:09,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:20:09,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:20:09,155 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc900b1bfcaecf91bc89637deaef4e1ddf2476faf43fa7e6f1e197c315ae3982 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:20:09,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:20:09,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:20:09,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:20:09,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:20:09,426 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:20:09,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/phases_1-1.c [2024-09-21 11:20:10,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:20:11,042 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:20:11,042 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/phases_1-1.c [2024-09-21 11:20:11,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/eddfcd52a/480cb0de6f9847d1b220b79c95020e7e/FLAGe5f3c5042 [2024-09-21 11:20:11,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/eddfcd52a/480cb0de6f9847d1b220b79c95020e7e [2024-09-21 11:20:11,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:20:11,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:20:11,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:20:11,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:20:11,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:20:11,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4676b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11, skipping insertion in model container [2024-09-21 11:20:11,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:20:11,249 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/loop-acceleration/phases_1-1.c[322,335] [2024-09-21 11:20:11,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:20:11,269 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:20:11,281 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/loop-acceleration/phases_1-1.c[322,335] [2024-09-21 11:20:11,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:20:11,301 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:20:11,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11 WrapperNode [2024-09-21 11:20:11,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:20:11,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:20:11,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:20:11,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:20:11,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,321 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:20:11,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:20:11,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:20:11,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:20:11,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:20:11,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,343 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]. [2024-09-21 11:20:11,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:20:11,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:20:11,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:20:11,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:20:11,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (1/1) ... [2024-09-21 11:20:11,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:20:11,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:11,394 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) [2024-09-21 11:20:11,397 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 [2024-09-21 11:20:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:20:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:20:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:20:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:20:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:20:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:20:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:20:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:20:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:20:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:20:11,498 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:20:11,500 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:20:11,606 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-09-21 11:20:11,606 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:20:11,623 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:20:11,623 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:20:11,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:11 BoogieIcfgContainer [2024-09-21 11:20:11,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:20:11,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:20:11,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:20:11,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:20:11,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:20:11" (1/3) ... [2024-09-21 11:20:11,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68ae7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:11, skipping insertion in model container [2024-09-21 11:20:11,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:20:11" (2/3) ... [2024-09-21 11:20:11,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68ae7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:20:11, skipping insertion in model container [2024-09-21 11:20:11,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:20:11" (3/3) ... [2024-09-21 11:20:11,631 INFO L112 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2024-09-21 11:20:11,645 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:20:11,645 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:20:11,696 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:20:11,702 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;@3aa15c09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:20:11,702 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:20:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:20:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-21 11:20:11,712 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:11,713 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:11,714 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:11,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:11,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1330752012, now seen corresponding path program 1 times [2024-09-21 11:20:11,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308266271] [2024-09-21 11:20:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:11,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:11,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308266271] [2024-09-21 11:20:11,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308266271] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:20:11,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:20:11,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:20:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515947921] [2024-09-21 11:20:11,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:20:11,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:20:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:20:11,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:20:11,928 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:11,949 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-09-21 11:20:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:20:11,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-21 11:20:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:11,960 INFO L225 Difference]: With dead ends: 29 [2024-09-21 11:20:11,960 INFO L226 Difference]: Without dead ends: 12 [2024-09-21 11:20:11,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:20:11,966 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:11,967 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:20:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-21 11:20:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-21 11:20:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-09-21 11:20:12,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2024-09-21 11:20:12,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:12,004 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-09-21 11:20:12,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-09-21 11:20:12,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-21 11:20:12,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:12,007 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:12,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:20:12,008 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:12,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1321516802, now seen corresponding path program 1 times [2024-09-21 11:20:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:12,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697033761] [2024-09-21 11:20:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:12,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:12,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697033761] [2024-09-21 11:20:12,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697033761] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:20:12,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:20:12,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-21 11:20:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571634309] [2024-09-21 11:20:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:20:12,187 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-21 11:20:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-21 11:20:12,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:20:12,188 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:12,220 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2024-09-21 11:20:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-21 11:20:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-21 11:20:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:12,222 INFO L225 Difference]: With dead ends: 21 [2024-09-21 11:20:12,222 INFO L226 Difference]: Without dead ends: 14 [2024-09-21 11:20:12,222 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-21 11:20:12,224 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:12,224 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:20:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-09-21 11:20:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-09-21 11:20:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-09-21 11:20:12,233 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2024-09-21 11:20:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:12,234 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-09-21 11:20:12,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-09-21 11:20:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-21 11:20:12,236 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:12,236 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:12,237 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 11:20:12,237 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:12,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash -257340833, now seen corresponding path program 1 times [2024-09-21 11:20:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:12,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662081208] [2024-09-21 11:20:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:12,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662081208] [2024-09-21 11:20:12,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662081208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:12,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23097911] [2024-09-21 11:20:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:12,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:12,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:12,399 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) [2024-09-21 11:20:12,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:20:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:12,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-21 11:20:12,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:12,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:12,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23097911] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:12,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:12,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-21 11:20:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673255470] [2024-09-21 11:20:12,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:12,581 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 11:20:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 11:20:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-21 11:20:12,583 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:12,639 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-09-21 11:20:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:20:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-21 11:20:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:12,641 INFO L225 Difference]: With dead ends: 25 [2024-09-21 11:20:12,641 INFO L226 Difference]: Without dead ends: 18 [2024-09-21 11:20:12,641 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:20:12,642 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:12,643 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:20:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-21 11:20:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-09-21 11:20:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-21 11:20:12,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-21 11:20:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:12,648 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-21 11:20:12,648 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:12,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-21 11:20:12,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-21 11:20:12,649 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:12,650 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:12,666 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-21 11:20:12,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:12,851 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:12,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:12,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1791473815, now seen corresponding path program 1 times [2024-09-21 11:20:12,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:12,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103153695] [2024-09-21 11:20:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:12,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:13,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:13,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:13,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103153695] [2024-09-21 11:20:13,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103153695] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:13,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519214721] [2024-09-21 11:20:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:13,017 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) [2024-09-21 11:20:13,020 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:20:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:13,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-21 11:20:13,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:13,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:20:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519214721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:13,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:13,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 11 [2024-09-21 11:20:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888491357] [2024-09-21 11:20:13,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:13,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-21 11:20:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-21 11:20:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-21 11:20:13,248 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:13,349 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-09-21 11:20:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:20:13,349 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-09-21 11:20:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:13,350 INFO L225 Difference]: With dead ends: 33 [2024-09-21 11:20:13,350 INFO L226 Difference]: Without dead ends: 22 [2024-09-21 11:20:13,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:20:13,353 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:13,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:20:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-21 11:20:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-09-21 11:20:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-09-21 11:20:13,367 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2024-09-21 11:20:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:13,368 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-09-21 11:20:13,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:13,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-09-21 11:20:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-21 11:20:13,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:13,371 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:13,388 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:20:13,571 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 [2024-09-21 11:20:13,572 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:13,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1266387508, now seen corresponding path program 2 times [2024-09-21 11:20:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:13,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240883610] [2024-09-21 11:20:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:13,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:13,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240883610] [2024-09-21 11:20:13,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240883610] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167660041] [2024-09-21 11:20:13,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:20:13,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:13,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:13,730 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) [2024-09-21 11:20:13,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:20:13,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:20:13,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:20:13,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-21 11:20:13,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:13,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:20:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167660041] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:13,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:13,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-21 11:20:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110068483] [2024-09-21 11:20:13,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:13,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 11:20:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 11:20:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:20:13,941 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:14,100 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-21 11:20:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:20:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-09-21 11:20:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:14,103 INFO L225 Difference]: With dead ends: 42 [2024-09-21 11:20:14,103 INFO L226 Difference]: Without dead ends: 32 [2024-09-21 11:20:14,104 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:20:14,105 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:14,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 58 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:20:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-21 11:20:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2024-09-21 11:20:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-21 11:20:14,117 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2024-09-21 11:20:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:14,117 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-21 11:20:14,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:14,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:14,118 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-21 11:20:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-21 11:20:14,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:14,119 INFO L216 NwaCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:14,136 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 11:20:14,319 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 [2024-09-21 11:20:14,319 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:14,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1613671460, now seen corresponding path program 3 times [2024-09-21 11:20:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785244475] [2024-09-21 11:20:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:14,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:20:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785244475] [2024-09-21 11:20:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785244475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779689546] [2024-09-21 11:20:14,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:20:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:14,507 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) [2024-09-21 11:20:14,508 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:20:14,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-09-21 11:20:14,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:20:14,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 11:20:14,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-21 11:20:14,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 35 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-21 11:20:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779689546] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:14,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:14,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2024-09-21 11:20:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935783034] [2024-09-21 11:20:14,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:14,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 11:20:14,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 11:20:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:20:14,755 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:19,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:20:23,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:20:27,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:20:31,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:20:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:31,296 INFO L93 Difference]: Finished difference Result 94 states and 133 transitions. [2024-09-21 11:20:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-21 11:20:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-09-21 11:20:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:31,298 INFO L225 Difference]: With dead ends: 94 [2024-09-21 11:20:31,298 INFO L226 Difference]: Without dead ends: 80 [2024-09-21 11:20:31,299 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=425, Unknown=0, NotChecked=0, Total=650 [2024-09-21 11:20:31,300 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 20 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:31,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 37 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 174 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2024-09-21 11:20:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-21 11:20:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2024-09-21 11:20:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-09-21 11:20:31,315 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 26 [2024-09-21 11:20:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:31,315 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-09-21 11:20:31,316 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:31,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-09-21 11:20:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-21 11:20:31,317 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:31,317 INFO L216 NwaCegarLoop]: trace histogram [15, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:31,334 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:20:31,518 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 [2024-09-21 11:20:31,518 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:31,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 644275237, now seen corresponding path program 4 times [2024-09-21 11:20:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894290170] [2024-09-21 11:20:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:31,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 56 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-21 11:20:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894290170] [2024-09-21 11:20:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894290170] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444483270] [2024-09-21 11:20:31,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:20:31,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:31,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:31,728 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) [2024-09-21 11:20:31,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:20:31,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:20:31,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:20:31,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 11:20:31,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 117 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-21 11:20:31,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 117 proven. 72 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-21 11:20:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444483270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:32,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 22 [2024-09-21 11:20:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275433804] [2024-09-21 11:20:32,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:32,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 11:20:32,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:32,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 11:20:32,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:20:32,276 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:20:34,553 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2024-09-21 11:20:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-21 11:20:34,553 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-09-21 11:20:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:20:34,554 INFO L225 Difference]: With dead ends: 87 [2024-09-21 11:20:34,554 INFO L226 Difference]: Without dead ends: 63 [2024-09-21 11:20:34,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=348, Invalid=582, Unknown=0, NotChecked=0, Total=930 [2024-09-21 11:20:34,560 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:20:34,561 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:20:34,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-21 11:20:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-21 11:20:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 58 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-21 11:20:34,591 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 40 [2024-09-21 11:20:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:20:34,591 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-21 11:20:34,592 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:20:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-21 11:20:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-21 11:20:34,595 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:20:34,595 INFO L216 NwaCegarLoop]: trace histogram [25, 17, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:20:34,610 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 11:20:34,795 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 [2024-09-21 11:20:34,796 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:20:34,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:20:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -779631609, now seen corresponding path program 5 times [2024-09-21 11:20:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:20:34,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034428958] [2024-09-21 11:20:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:20:34,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:20:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:35,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:20:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:20:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 270 proven. 306 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-21 11:20:35,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:20:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034428958] [2024-09-21 11:20:35,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034428958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:20:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029181002] [2024-09-21 11:20:35,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:20:35,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:20:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:20:35,343 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) [2024-09-21 11:20:35,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:20:35,420 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-21 11:20:35,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:20:35,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-21 11:20:35,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:20:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 154 proven. 462 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-21 11:20:35,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:20:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 154 proven. 462 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-21 11:20:36,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029181002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:20:36,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:20:36,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 25] total 48 [2024-09-21 11:20:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96867736] [2024-09-21 11:20:36,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:20:36,888 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-21 11:20:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:20:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-21 11:20:36,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2024-09-21 11:20:36,890 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:21:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:21:53,184 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2024-09-21 11:21:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-21 11:21:53,184 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2024-09-21 11:21:53,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:21:53,186 INFO L225 Difference]: With dead ends: 133 [2024-09-21 11:21:53,186 INFO L226 Difference]: Without dead ends: 109 [2024-09-21 11:21:53,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 76.9s TimeCoverageRelationStatistics Valid=1697, Invalid=3133, Unknown=0, NotChecked=0, Total=4830 [2024-09-21 11:21:53,188 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-21 11:21:53,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-21 11:21:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-21 11:21:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-09-21 11:21:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0961538461538463) internal successors, (114), 104 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:21:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2024-09-21 11:21:53,221 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 60 [2024-09-21 11:21:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:21:53,222 INFO L474 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2024-09-21 11:21:53,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:21:53,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:21:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2024-09-21 11:21:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-21 11:21:53,224 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:21:53,224 INFO L216 NwaCegarLoop]: trace histogram [49, 41, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:21:53,237 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 11:21:53,424 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 [2024-09-21 11:21:53,424 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:21:53,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:21:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1803417023, now seen corresponding path program 6 times [2024-09-21 11:21:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:21:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30185004] [2024-09-21 11:21:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:21:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:21:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:21:55,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:21:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:21:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 630 proven. 1722 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-21 11:21:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:21:55,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30185004] [2024-09-21 11:21:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30185004] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:21:55,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725547075] [2024-09-21 11:21:55,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:21:55,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:21:55,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:21:55,076 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) [2024-09-21 11:21:55,077 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:21:55,491 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-09-21 11:21:55,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:21:55,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 11:21:55,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:21:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 697 proven. 64 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-21 11:21:55,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:21:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 697 proven. 64 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2024-09-21 11:21:56,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725547075] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:21:56,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:21:56,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 11, 11] total 62 [2024-09-21 11:21:56,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938943912] [2024-09-21 11:21:56,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:21:56,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-21 11:21:56,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:21:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-21 11:21:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=2873, Unknown=0, NotChecked=0, Total=3782 [2024-09-21 11:21:56,416 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 62 states, 62 states have (on average 2.1129032258064515) internal successors, (131), 62 states have internal predecessors, (131), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-21 11:22:04,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:08,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:12,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:16,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:20,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:24,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:28,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:32,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:36,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:40,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:44,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:48,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:52,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:22:57,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:01,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:05,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:09,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:13,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:17,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:21,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:25,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:29,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:33,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:37,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:41,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:45,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:49,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:53,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:23:58,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:02,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:05,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:09,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:13,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:17,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:21,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:25,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:30,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:34,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:38,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:42,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:46,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-09-21 11:24:50,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []