./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.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 ca4ee3dd 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/recursive/EvenOdd01-1.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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --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-ca4ee3d-m [2024-09-20 19:46:45,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:46:45,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:46:45,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:46:45,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:46:45,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:46:45,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:46:45,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:46:45,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:46:45,630 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:46:45,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:46:45,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:46:45,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:46:45,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:46:45,634 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:46:45,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:46:45,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:46:45,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:46:45,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:46:45,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:46:45,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:46:45,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:46:45,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:46:45,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:46:45,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:46:45,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:46:45,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:46:45,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:46:45,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:46:45,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:46:45,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:46:45,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:46:45,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:46:45,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:46:45,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:46:45,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:46:45,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:46:45,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:46:45,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:46:45,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:46:45,639 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:46:45,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:46:45,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:46:45,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:46:45,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:46:45,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:46:45,875 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:46:45,876 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:46:45,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-20 19:46:47,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:46:47,358 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:46:47,359 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-09-20 19:46:47,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/90b2c4ae0/f02cd1e0e84349ddac80d71a3c80fdb2/FLAGef30df572 [2024-09-20 19:46:47,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/90b2c4ae0/f02cd1e0e84349ddac80d71a3c80fdb2 [2024-09-20 19:46:47,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:46:47,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:46:47,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:46:47,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:46:47,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:46:47,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6889c763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47, skipping insertion in model container [2024-09-20 19:46:47,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:46:47,520 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/recursive/EvenOdd01-1.c[975,988] [2024-09-20 19:46:47,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:46:47,531 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:46:47,542 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/recursive/EvenOdd01-1.c[975,988] [2024-09-20 19:46:47,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:46:47,574 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:46:47,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47 WrapperNode [2024-09-20 19:46:47,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:46:47,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:46:47,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:46:47,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:46:47,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,596 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:46:47,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:46:47,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:46:47,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:46:47,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:46:47,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,616 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]. [2024-09-20 19:46:47,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:46:47,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:46:47,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:46:47,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:46:47,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (1/1) ... [2024-09-20 19:46:47,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:46:47,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:47,658 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) [2024-09-20 19:46:47,671 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 [2024-09-20 19:46:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:46:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-09-20 19:46:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-09-20 19:46:47,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:46:47,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:46:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:46:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:46:47,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:46:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-09-20 19:46:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-09-20 19:46:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:46:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:46:47,768 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:46:47,769 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:46:47,906 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-20 19:46:47,906 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:46:47,924 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:46:47,924 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 19:46:47,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:46:47 BoogieIcfgContainer [2024-09-20 19:46:47,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:46:47,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:46:47,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:46:47,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:46:47,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:46:47" (1/3) ... [2024-09-20 19:46:47,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d903a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:46:47, skipping insertion in model container [2024-09-20 19:46:47,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:46:47" (2/3) ... [2024-09-20 19:46:47,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d903a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:46:47, skipping insertion in model container [2024-09-20 19:46:47,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:46:47" (3/3) ... [2024-09-20 19:46:47,930 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-09-20 19:46:47,942 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:46:47,943 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:46:47,990 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:46:47,995 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;@6e9f79b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:46:47,995 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:46:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:46:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-20 19:46:48,007 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:48,008 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:48,008 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:48,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1991504062, now seen corresponding path program 1 times [2024-09-20 19:46:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869530560] [2024-09-20 19:46:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:46:48,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:48,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869530560] [2024-09-20 19:46:48,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869530560] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:48,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:48,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-20 19:46:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897201365] [2024-09-20 19:46:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:48,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 19:46:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 19:46:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:46:48,539 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:46:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:48,618 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-09-20 19:46:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 19:46:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-20 19:46:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:48,627 INFO L225 Difference]: With dead ends: 41 [2024-09-20 19:46:48,627 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:46:48,630 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:46:48,633 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:48,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:46:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-20 19:46:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-20 19:46:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-20 19:46:48,669 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2024-09-20 19:46:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:48,670 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-20 19:46:48,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:46:48,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-20 19:46:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 19:46:48,672 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:48,672 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:48,672 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:46:48,672 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:48,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1940222656, now seen corresponding path program 1 times [2024-09-20 19:46:48,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:48,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576204319] [2024-09-20 19:46:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:48,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:46:48,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576204319] [2024-09-20 19:46:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576204319] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:48,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:48,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-20 19:46:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290025375] [2024-09-20 19:46:48,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:48,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 19:46:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 19:46:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:46:48,975 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:46:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:49,042 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-09-20 19:46:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 19:46:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-20 19:46:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:49,044 INFO L225 Difference]: With dead ends: 33 [2024-09-20 19:46:49,044 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:46:49,045 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:46:49,047 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:49,047 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:46:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-20 19:46:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-20 19:46:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-09-20 19:46:49,056 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2024-09-20 19:46:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:49,057 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-09-20 19:46:49,057 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:46:49,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-09-20 19:46:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 19:46:49,059 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:49,059 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:49,059 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 19:46:49,060 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:49,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2009952378, now seen corresponding path program 1 times [2024-09-20 19:46:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572636812] [2024-09-20 19:46:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:46:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572636812] [2024-09-20 19:46:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572636812] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:46:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744200151] [2024-09-20 19:46:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:49,156 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:46:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:46:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:46:49,159 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:46:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:49,192 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-20 19:46:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:46:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-20 19:46:49,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:49,194 INFO L225 Difference]: With dead ends: 41 [2024-09-20 19:46:49,194 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:46:49,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:46:49,196 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:49,197 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:46:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:46:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-20 19:46:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-20 19:46:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-20 19:46:49,206 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2024-09-20 19:46:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:49,207 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-20 19:46:49,207 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:46:49,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-20 19:46:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:46:49,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:49,209 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:49,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 19:46:49,209 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash 380134900, now seen corresponding path program 1 times [2024-09-20 19:46:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73471191] [2024-09-20 19:46:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:46:49,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:49,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73471191] [2024-09-20 19:46:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73471191] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:49,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-09-20 19:46:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671420118] [2024-09-20 19:46:49,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:49,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-20 19:46:49,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-20 19:46:49,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-09-20 19:46:49,419 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:46:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:49,511 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-09-20 19:46:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 19:46:49,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-20 19:46:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:49,513 INFO L225 Difference]: With dead ends: 36 [2024-09-20 19:46:49,513 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 19:46:49,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-20 19:46:49,514 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:49,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 19:46:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 19:46:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-20 19:46:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-20 19:46:49,524 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2024-09-20 19:46:49,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:49,524 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-20 19:46:49,526 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 19:46:49,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-20 19:46:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 19:46:49,527 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:49,527 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:49,527 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 19:46:49,528 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1592992894, now seen corresponding path program 1 times [2024-09-20 19:46:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446597625] [2024-09-20 19:46:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:49,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:49,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446597625] [2024-09-20 19:46:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446597625] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:46:49,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:46:49,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:46:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194769395] [2024-09-20 19:46:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:46:49,613 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:46:49,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:46:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:46:49,614 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 19:46:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:49,652 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-09-20 19:46:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:46:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-09-20 19:46:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:49,655 INFO L225 Difference]: With dead ends: 44 [2024-09-20 19:46:49,655 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 19:46:49,655 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:46:49,657 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:49,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:46:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 19:46:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-20 19:46:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-20 19:46:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-20 19:46:49,666 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2024-09-20 19:46:49,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:49,667 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-20 19:46:49,667 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-20 19:46:49,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-20 19:46:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 19:46:49,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:49,671 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:49,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-20 19:46:49,671 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:49,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2012013244, now seen corresponding path program 1 times [2024-09-20 19:46:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:49,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64013653] [2024-09-20 19:46:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:49,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:49,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64013653] [2024-09-20 19:46:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64013653] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957408611] [2024-09-20 19:46:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:50,000 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) [2024-09-20 19:46:50,001 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:46:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:50,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 19:46:50,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 19:46:50,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:46:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957408611] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:50,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:50,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-09-20 19:46:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59571449] [2024-09-20 19:46:50,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:50,563 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 19:46:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 19:46:50,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-09-20 19:46:50,565 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 19:46:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:50,723 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-09-20 19:46:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 19:46:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2024-09-20 19:46:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:50,725 INFO L225 Difference]: With dead ends: 42 [2024-09-20 19:46:50,725 INFO L226 Difference]: Without dead ends: 38 [2024-09-20 19:46:50,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-09-20 19:46:50,726 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:50,726 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-20 19:46:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-09-20 19:46:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 19:46:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-09-20 19:46:50,733 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2024-09-20 19:46:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:50,733 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-09-20 19:46:50,733 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-09-20 19:46:50,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-09-20 19:46:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 19:46:50,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:50,735 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:50,750 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 19:46:50,935 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 19:46:50,935 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:50,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:50,936 INFO L85 PathProgramCache]: Analyzing trace with hash 537295668, now seen corresponding path program 1 times [2024-09-20 19:46:50,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:50,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987423883] [2024-09-20 19:46:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-20 19:46:51,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987423883] [2024-09-20 19:46:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987423883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226505260] [2024-09-20 19:46:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:51,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:51,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:51,259 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) [2024-09-20 19:46:51,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:46:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:51,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 19:46:51,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-20 19:46:51,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 19:46:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226505260] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:51,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-09-20 19:46:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228794168] [2024-09-20 19:46:51,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:51,852 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 19:46:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 19:46:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-09-20 19:46:51,853 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-20 19:46:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:52,091 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-20 19:46:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 19:46:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 36 [2024-09-20 19:46:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:52,093 INFO L225 Difference]: With dead ends: 48 [2024-09-20 19:46:52,093 INFO L226 Difference]: Without dead ends: 44 [2024-09-20 19:46:52,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-09-20 19:46:52,094 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:52,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 299 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-20 19:46:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-09-20 19:46:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-09-20 19:46:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-09-20 19:46:52,100 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2024-09-20 19:46:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:52,100 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-09-20 19:46:52,101 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-20 19:46:52,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-09-20 19:46:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-20 19:46:52,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:52,102 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:52,114 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 19:46:52,309 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 19:46:52,310 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:52,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2054135496, now seen corresponding path program 2 times [2024-09-20 19:46:52,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:52,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763838873] [2024-09-20 19:46:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-20 19:46:52,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:52,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763838873] [2024-09-20 19:46:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763838873] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:52,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671028115] [2024-09-20 19:46:52,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:46:52,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:52,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:52,638 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) [2024-09-20 19:46:52,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:46:52,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:46:52,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:52,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 19:46:52,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-09-20 19:46:52,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 19:46:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671028115] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:53,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-09-20 19:46:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773686836] [2024-09-20 19:46:53,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:53,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 19:46:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 19:46:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-09-20 19:46:53,324 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-20 19:46:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:53,556 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-09-20 19:46:53,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 19:46:53,557 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 43 [2024-09-20 19:46:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:53,558 INFO L225 Difference]: With dead ends: 54 [2024-09-20 19:46:53,558 INFO L226 Difference]: Without dead ends: 50 [2024-09-20 19:46:53,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:46:53,559 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:53,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 289 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:46:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-20 19:46:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2024-09-20 19:46:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-20 19:46:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-09-20 19:46:53,565 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2024-09-20 19:46:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:53,566 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-09-20 19:46:53,566 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-09-20 19:46:53,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-09-20 19:46:53,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-20 19:46:53,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:53,567 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:53,579 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:46:53,767 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-20 19:46:53,768 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:53,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash 620923892, now seen corresponding path program 2 times [2024-09-20 19:46:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:53,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031956402] [2024-09-20 19:46:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:53,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:53,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:53,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:53,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:53,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:54,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:54,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:54,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-20 19:46:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031956402] [2024-09-20 19:46:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031956402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009135187] [2024-09-20 19:46:54,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:46:54,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:54,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:54,150 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) [2024-09-20 19:46:54,151 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:46:54,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:46:54,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:54,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 19:46:54,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-20 19:46:54,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 19:46:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009135187] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:54,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-09-20 19:46:54,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842457582] [2024-09-20 19:46:54,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:54,978 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 19:46:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 19:46:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-09-20 19:46:54,979 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-20 19:46:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:55,337 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-09-20 19:46:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 19:46:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 50 [2024-09-20 19:46:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:55,338 INFO L225 Difference]: With dead ends: 60 [2024-09-20 19:46:55,338 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 19:46:55,339 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 19:46:55,339 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:55,340 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 359 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 19:46:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-09-20 19:46:55,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-09-20 19:46:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-09-20 19:46:55,347 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2024-09-20 19:46:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:55,347 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-09-20 19:46:55,347 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-09-20 19:46:55,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-09-20 19:46:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-20 19:46:55,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:55,348 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:55,360 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:46:55,549 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:55,549 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:55,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -583855668, now seen corresponding path program 3 times [2024-09-20 19:46:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073147969] [2024-09-20 19:46:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:55,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:55,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-20 19:46:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:56,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073147969] [2024-09-20 19:46:56,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073147969] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:56,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192986558] [2024-09-20 19:46:56,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:46:56,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:56,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:56,015 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) [2024-09-20 19:46:56,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 19:46:56,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 19:46:56,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:56,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-20 19:46:56,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-20 19:46:56,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-20 19:46:57,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192986558] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:57,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:57,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-09-20 19:46:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854447858] [2024-09-20 19:46:57,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:57,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 19:46:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 19:46:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 19:46:57,046 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-20 19:46:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:46:57,429 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-09-20 19:46:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-20 19:46:57,430 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 57 [2024-09-20 19:46:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:46:57,431 INFO L225 Difference]: With dead ends: 66 [2024-09-20 19:46:57,431 INFO L226 Difference]: Without dead ends: 62 [2024-09-20 19:46:57,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 19:46:57,432 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 19:46:57,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 396 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 19:46:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-20 19:46:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-09-20 19:46:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 10 states have return successors, (11), 10 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-20 19:46:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-09-20 19:46:57,445 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2024-09-20 19:46:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:46:57,445 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-09-20 19:46:57,446 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-09-20 19:46:57,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-09-20 19:46:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-09-20 19:46:57,446 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:46:57,446 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:46:57,459 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 19:46:57,650 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 19:46:57,651 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:46:57,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:46:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -472917964, now seen corresponding path program 3 times [2024-09-20 19:46:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:46:57,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352827922] [2024-09-20 19:46:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:46:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:46:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:57,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:46:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:57,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:46:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:57,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:57,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:57,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:58,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:58,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:58,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:58,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:46:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:46:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-09-20 19:46:58,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:46:58,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352827922] [2024-09-20 19:46:58,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352827922] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:46:58,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142804328] [2024-09-20 19:46:58,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:46:58,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:46:58,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:46:58,293 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) [2024-09-20 19:46:58,294 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 19:46:58,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 19:46:58,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:46:58,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 19:46:58,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:46:58,448 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-20 19:46:58,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:46:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 19:46:59,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142804328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:46:59,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:46:59,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-09-20 19:46:59,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202678825] [2024-09-20 19:46:59,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:46:59,563 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 19:46:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:46:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 19:46:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 19:46:59,564 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-20 19:47:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:00,065 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-09-20 19:47:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 19:47:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2024-09-20 19:47:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:00,067 INFO L225 Difference]: With dead ends: 72 [2024-09-20 19:47:00,067 INFO L226 Difference]: Without dead ends: 68 [2024-09-20 19:47:00,068 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 19:47:00,068 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:00,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 479 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:47:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-20 19:47:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2024-09-20 19:47:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 11 states have return successors, (12), 11 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-20 19:47:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-09-20 19:47:00,082 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2024-09-20 19:47:00,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:00,082 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-09-20 19:47:00,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-20 19:47:00,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-09-20 19:47:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-09-20 19:47:00,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:00,084 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:00,096 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:00,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 19:47:00,290 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:00,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 749237840, now seen corresponding path program 4 times [2024-09-20 19:47:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912969105] [2024-09-20 19:47:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:00,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:01,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-09-20 19:47:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912969105] [2024-09-20 19:47:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912969105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945733234] [2024-09-20 19:47:01,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:47:01,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:01,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:01,061 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) [2024-09-20 19:47:01,062 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 19:47:01,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:47:01,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:01,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 19:47:01,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 19:47:01,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-20 19:47:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945733234] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:02,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:02,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-09-20 19:47:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087120335] [2024-09-20 19:47:02,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:02,427 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 19:47:02,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:02,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 19:47:02,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 19:47:02,432 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-20 19:47:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:02,944 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-09-20 19:47:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 19:47:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 71 [2024-09-20 19:47:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:02,945 INFO L225 Difference]: With dead ends: 78 [2024-09-20 19:47:02,945 INFO L226 Difference]: Without dead ends: 74 [2024-09-20 19:47:02,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 19:47:02,946 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:02,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 580 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:47:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-20 19:47:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2024-09-20 19:47:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 12 states have return successors, (13), 12 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-20 19:47:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-09-20 19:47:02,965 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2024-09-20 19:47:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:02,966 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-09-20 19:47:02,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-09-20 19:47:02,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-09-20 19:47:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-20 19:47:02,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:02,967 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:02,979 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 19:47:03,171 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:03,172 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:03,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1701421044, now seen corresponding path program 4 times [2024-09-20 19:47:03,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:03,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386289051] [2024-09-20 19:47:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-09-20 19:47:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386289051] [2024-09-20 19:47:03,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386289051] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:03,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580725694] [2024-09-20 19:47:03,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:47:03,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:03,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:03,979 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 19:47:04,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:47:04,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:04,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 19:47:04,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-20 19:47:04,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-20 19:47:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580725694] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:05,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-09-20 19:47:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419688180] [2024-09-20 19:47:05,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:05,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-20 19:47:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-20 19:47:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 19:47:05,661 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-20 19:47:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:06,333 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-09-20 19:47:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 19:47:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 78 [2024-09-20 19:47:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:06,335 INFO L225 Difference]: With dead ends: 84 [2024-09-20 19:47:06,335 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 19:47:06,336 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-09-20 19:47:06,337 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:06,338 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 559 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:47:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 19:47:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2024-09-20 19:47:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 13 states have return successors, (14), 13 states have call predecessors, (14), 4 states have call successors, (14) [2024-09-20 19:47:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-09-20 19:47:06,350 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2024-09-20 19:47:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:06,350 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-09-20 19:47:06,351 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-09-20 19:47:06,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-09-20 19:47:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-20 19:47:06,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:06,351 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:06,363 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 19:47:06,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:06,553 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:06,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -475870124, now seen corresponding path program 5 times [2024-09-20 19:47:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529620230] [2024-09-20 19:47:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:06,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-20 19:47:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529620230] [2024-09-20 19:47:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529620230] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192871327] [2024-09-20 19:47:07,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:47:07,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:07,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:07,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:07,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 19:47:07,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-20 19:47:07,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:07,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 19:47:07,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-20 19:47:07,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-20 19:47:09,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192871327] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:09,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:09,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-09-20 19:47:09,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77526822] [2024-09-20 19:47:09,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:09,288 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 19:47:09,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 19:47:09,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 19:47:09,289 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-20 19:47:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:09,938 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-09-20 19:47:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 19:47:09,939 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) Word has length 85 [2024-09-20 19:47:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:09,942 INFO L225 Difference]: With dead ends: 90 [2024-09-20 19:47:09,942 INFO L226 Difference]: Without dead ends: 86 [2024-09-20 19:47:09,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-09-20 19:47:09,943 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:09,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 637 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 19:47:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-20 19:47:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2024-09-20 19:47:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 5 states have call successors, (5), 4 states have call predecessors, (5), 14 states have return successors, (15), 14 states have call predecessors, (15), 4 states have call successors, (15) [2024-09-20 19:47:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-09-20 19:47:09,958 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2024-09-20 19:47:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:09,958 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-09-20 19:47:09,959 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-09-20 19:47:09,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-09-20 19:47:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-20 19:47:09,959 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:09,960 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:09,972 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 19:47:10,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 19:47:10,160 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:10,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2053954764, now seen corresponding path program 5 times [2024-09-20 19:47:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:10,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415073658] [2024-09-20 19:47:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:10,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:11,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:11,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-20 19:47:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415073658] [2024-09-20 19:47:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415073658] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:11,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509562010] [2024-09-20 19:47:11,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:47:11,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:11,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:11,163 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:11,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 19:47:11,222 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-20 19:47:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:11,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-20 19:47:11,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-20 19:47:11,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-20 19:47:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509562010] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:13,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-09-20 19:47:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403782687] [2024-09-20 19:47:13,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:13,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-20 19:47:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-20 19:47:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 19:47:13,186 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-20 19:47:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:13,979 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-09-20 19:47:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 19:47:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) Word has length 92 [2024-09-20 19:47:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:13,980 INFO L225 Difference]: With dead ends: 96 [2024-09-20 19:47:13,980 INFO L226 Difference]: Without dead ends: 92 [2024-09-20 19:47:13,981 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-09-20 19:47:13,982 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:13,982 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 667 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:47:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-09-20 19:47:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2024-09-20 19:47:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 5 states have call successors, (5), 4 states have call predecessors, (5), 15 states have return successors, (16), 15 states have call predecessors, (16), 4 states have call successors, (16) [2024-09-20 19:47:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-09-20 19:47:14,002 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2024-09-20 19:47:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:14,002 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-09-20 19:47:14,002 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-09-20 19:47:14,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-09-20 19:47:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-20 19:47:14,003 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:14,003 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:14,015 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 19:47:14,204 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 19:47:14,204 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:14,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -142797864, now seen corresponding path program 6 times [2024-09-20 19:47:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453811349] [2024-09-20 19:47:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:14,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-20 19:47:15,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:15,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453811349] [2024-09-20 19:47:15,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453811349] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:15,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046578837] [2024-09-20 19:47:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:47:15,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:15,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:15,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:15,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 19:47:15,442 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 19:47:15,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:15,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-09-20 19:47:15,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-09-20 19:47:15,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-20 19:47:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046578837] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:17,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-09-20 19:47:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487952372] [2024-09-20 19:47:17,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:17,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-20 19:47:17,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-20 19:47:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 19:47:17,608 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-20 19:47:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:18,418 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2024-09-20 19:47:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 19:47:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 99 [2024-09-20 19:47:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:18,419 INFO L225 Difference]: With dead ends: 102 [2024-09-20 19:47:18,419 INFO L226 Difference]: Without dead ends: 98 [2024-09-20 19:47:18,421 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 19:47:18,421 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:18,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 691 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:47:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-20 19:47:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2024-09-20 19:47:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 16 states have return successors, (17), 16 states have call predecessors, (17), 4 states have call successors, (17) [2024-09-20 19:47:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-09-20 19:47:18,440 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2024-09-20 19:47:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:18,440 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-09-20 19:47:18,440 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-09-20 19:47:18,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-09-20 19:47:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-20 19:47:18,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:18,441 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:18,453 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:18,645 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 19:47:18,646 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -86531596, now seen corresponding path program 6 times [2024-09-20 19:47:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621292663] [2024-09-20 19:47:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:18,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:18,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:18,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-09-20 19:47:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621292663] [2024-09-20 19:47:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621292663] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196338159] [2024-09-20 19:47:19,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:47:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:19,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:19,825 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 19:47:19,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 19:47:19,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:19,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-09-20 19:47:19,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-20 19:47:20,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-09-20 19:47:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196338159] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:22,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-09-20 19:47:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691250125] [2024-09-20 19:47:22,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:22,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-20 19:47:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-20 19:47:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 19:47:22,534 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-20 19:47:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:23,503 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2024-09-20 19:47:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 19:47:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 106 [2024-09-20 19:47:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:23,504 INFO L225 Difference]: With dead ends: 108 [2024-09-20 19:47:23,504 INFO L226 Difference]: Without dead ends: 104 [2024-09-20 19:47:23,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-09-20 19:47:23,506 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:23,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 773 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 19:47:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-20 19:47:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2024-09-20 19:47:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 17 states have return successors, (18), 17 states have call predecessors, (18), 4 states have call successors, (18) [2024-09-20 19:47:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-09-20 19:47:23,528 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2024-09-20 19:47:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:23,529 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-09-20 19:47:23,529 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-20 19:47:23,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-09-20 19:47:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-09-20 19:47:23,530 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:23,530 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:23,543 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:23,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 19:47:23,735 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:23,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash -736473892, now seen corresponding path program 7 times [2024-09-20 19:47:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:23,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212479097] [2024-09-20 19:47:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:23,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:23,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:24,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:25,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:25,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-20 19:47:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212479097] [2024-09-20 19:47:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212479097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25498237] [2024-09-20 19:47:25,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:47:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:25,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:25,112 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 19:47:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:25,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-09-20 19:47:25,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-09-20 19:47:25,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-09-20 19:47:28,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25498237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:28,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-09-20 19:47:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298538542] [2024-09-20 19:47:28,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:28,001 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-20 19:47:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-20 19:47:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-09-20 19:47:28,002 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-20 19:47:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:28,994 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-09-20 19:47:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-20 19:47:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) Word has length 113 [2024-09-20 19:47:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:28,995 INFO L225 Difference]: With dead ends: 114 [2024-09-20 19:47:28,995 INFO L226 Difference]: Without dead ends: 110 [2024-09-20 19:47:28,997 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 19:47:28,997 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:28,997 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 862 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 19:47:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-09-20 19:47:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2024-09-20 19:47:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 18 states have return successors, (19), 18 states have call predecessors, (19), 4 states have call successors, (19) [2024-09-20 19:47:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-09-20 19:47:29,023 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 113 [2024-09-20 19:47:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:29,023 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-09-20 19:47:29,023 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-20 19:47:29,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-09-20 19:47:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-20 19:47:29,024 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:29,024 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:29,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-20 19:47:29,228 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-20 19:47:29,229 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:29,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash -561357772, now seen corresponding path program 7 times [2024-09-20 19:47:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:29,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936348618] [2024-09-20 19:47:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:29,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-20 19:47:30,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936348618] [2024-09-20 19:47:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936348618] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381900885] [2024-09-20 19:47:30,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:47:30,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:30,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:30,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:30,819 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 19:47:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:30,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-09-20 19:47:30,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-09-20 19:47:31,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-09-20 19:47:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381900885] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:33,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-09-20 19:47:33,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285796734] [2024-09-20 19:47:33,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:33,849 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-20 19:47:33,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-20 19:47:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-09-20 19:47:33,852 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-20 19:47:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:34,929 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-09-20 19:47:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 19:47:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) Word has length 120 [2024-09-20 19:47:34,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:34,931 INFO L225 Difference]: With dead ends: 120 [2024-09-20 19:47:34,931 INFO L226 Difference]: Without dead ends: 116 [2024-09-20 19:47:34,933 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-09-20 19:47:34,934 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:34,934 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 909 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 19:47:34,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-20 19:47:34,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72. [2024-09-20 19:47:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 19 states have return successors, (20), 19 states have call predecessors, (20), 4 states have call successors, (20) [2024-09-20 19:47:34,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-09-20 19:47:34,974 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 120 [2024-09-20 19:47:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:34,974 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-09-20 19:47:34,975 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-09-20 19:47:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:34,975 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-09-20 19:47:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-20 19:47:34,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:34,980 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:34,992 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-20 19:47:35,181 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:35,181 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:35,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -672827552, now seen corresponding path program 8 times [2024-09-20 19:47:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138496829] [2024-09-20 19:47:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:35,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:36,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-09-20 19:47:37,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138496829] [2024-09-20 19:47:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138496829] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803934335] [2024-09-20 19:47:37,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:47:37,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:37,059 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:37,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 19:47:37,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:47:37,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:37,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-09-20 19:47:37,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-09-20 19:47:37,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-09-20 19:47:40,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803934335] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:40,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:40,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-09-20 19:47:40,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358188590] [2024-09-20 19:47:40,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:40,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-20 19:47:40,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-20 19:47:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 19:47:40,602 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-20 19:47:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:41,851 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2024-09-20 19:47:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-20 19:47:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) Word has length 127 [2024-09-20 19:47:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:41,852 INFO L225 Difference]: With dead ends: 126 [2024-09-20 19:47:41,852 INFO L226 Difference]: Without dead ends: 122 [2024-09-20 19:47:41,853 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-09-20 19:47:41,853 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 90 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:41,853 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1206 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:47:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-20 19:47:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-09-20 19:47:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 20 states have return successors, (21), 20 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-20 19:47:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-09-20 19:47:41,894 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 127 [2024-09-20 19:47:41,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:41,895 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-09-20 19:47:41,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-09-20 19:47:41,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-09-20 19:47:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-20 19:47:41,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:41,896 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:41,907 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-20 19:47:42,100 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:42,100 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:42,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1262054924, now seen corresponding path program 8 times [2024-09-20 19:47:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914851260] [2024-09-20 19:47:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:42,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 19:47:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:43,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914851260] [2024-09-20 19:47:43,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914851260] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:43,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121156381] [2024-09-20 19:47:43,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:47:43,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:43,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:43,993 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:43,994 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 19:47:44,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:47:44,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:44,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-09-20 19:47:44,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-09-20 19:47:44,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-20 19:47:47,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121156381] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:47,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:47,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-09-20 19:47:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601334797] [2024-09-20 19:47:47,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:47,965 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-20 19:47:47,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-20 19:47:47,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-09-20 19:47:47,969 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-20 19:47:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:49,272 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-09-20 19:47:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 19:47:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 134 [2024-09-20 19:47:49,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:49,273 INFO L225 Difference]: With dead ends: 132 [2024-09-20 19:47:49,273 INFO L226 Difference]: Without dead ends: 128 [2024-09-20 19:47:49,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 19:47:49,275 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:49,275 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1210 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:47:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-20 19:47:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2024-09-20 19:47:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 21 states have return successors, (22), 21 states have call predecessors, (22), 4 states have call successors, (22) [2024-09-20 19:47:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-09-20 19:47:49,349 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 134 [2024-09-20 19:47:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:49,349 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-09-20 19:47:49,349 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-09-20 19:47:49,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-09-20 19:47:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-20 19:47:49,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:49,351 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:49,363 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:49,555 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:49,556 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1339134820, now seen corresponding path program 9 times [2024-09-20 19:47:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361427366] [2024-09-20 19:47:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:49,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:49,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:49,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:50,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-09-20 19:47:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:47:51,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361427366] [2024-09-20 19:47:51,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361427366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:47:51,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022724025] [2024-09-20 19:47:51,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:47:51,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:47:51,743 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:47:51,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 19:47:51,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-20 19:47:51,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:47:51,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-09-20 19:47:51,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:47:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-09-20 19:47:52,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:47:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-20 19:47:56,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022724025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:47:56,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:47:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-09-20 19:47:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504427568] [2024-09-20 19:47:56,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:47:56,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-20 19:47:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:47:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-20 19:47:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-09-20 19:47:56,292 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-20 19:47:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:47:57,723 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2024-09-20 19:47:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 19:47:57,723 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) Word has length 141 [2024-09-20 19:47:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:47:57,724 INFO L225 Difference]: With dead ends: 138 [2024-09-20 19:47:57,724 INFO L226 Difference]: Without dead ends: 134 [2024-09-20 19:47:57,726 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-09-20 19:47:57,726 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:47:57,727 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1338 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:47:57,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-20 19:47:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2024-09-20 19:47:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 22 states have return successors, (23), 22 states have call predecessors, (23), 4 states have call successors, (23) [2024-09-20 19:47:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-09-20 19:47:57,779 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 141 [2024-09-20 19:47:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:47:57,779 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-09-20 19:47:57,779 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-09-20 19:47:57,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-09-20 19:47:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-20 19:47:57,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:47:57,780 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:47:57,792 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-20 19:47:57,983 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:47:57,983 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:47:57,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:47:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -194018508, now seen corresponding path program 9 times [2024-09-20 19:47:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:47:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468463970] [2024-09-20 19:47:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:47:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:47:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:47:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:47:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:58,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:47:59,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:47:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-09-20 19:48:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468463970] [2024-09-20 19:48:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468463970] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586246757] [2024-09-20 19:48:00,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:48:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:00,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:00,500 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:00,503 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 19:48:00,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-20 19:48:00,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:00,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-09-20 19:48:00,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-09-20 19:48:00,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:48:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-20 19:48:04,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586246757] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:48:04,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:48:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-09-20 19:48:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462654049] [2024-09-20 19:48:04,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:48:04,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-20 19:48:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:48:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-20 19:48:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-09-20 19:48:04,976 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-20 19:48:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:48:06,420 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2024-09-20 19:48:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 19:48:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) Word has length 148 [2024-09-20 19:48:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:48:06,422 INFO L225 Difference]: With dead ends: 144 [2024-09-20 19:48:06,422 INFO L226 Difference]: Without dead ends: 140 [2024-09-20 19:48:06,424 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-09-20 19:48:06,424 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 19:48:06,424 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1175 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 19:48:06,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-09-20 19:48:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2024-09-20 19:48:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 23 states have return successors, (24), 23 states have call predecessors, (24), 4 states have call successors, (24) [2024-09-20 19:48:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-09-20 19:48:06,500 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 148 [2024-09-20 19:48:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:48:06,500 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-09-20 19:48:06,501 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-09-20 19:48:06,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-09-20 19:48:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-09-20 19:48:06,502 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:48:06,502 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:48:06,514 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-20 19:48:06,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-20 19:48:06,703 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:48:06,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash -212229912, now seen corresponding path program 10 times [2024-09-20 19:48:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:48:06,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559830591] [2024-09-20 19:48:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:48:06,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:48:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:06,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:48:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:06,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:48:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:07,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:08,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:09,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:09,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:09,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:09,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-09-20 19:48:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559830591] [2024-09-20 19:48:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559830591] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119519003] [2024-09-20 19:48:09,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:48:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:09,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:09,353 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:09,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-20 19:48:09,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:48:09,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:09,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-09-20 19:48:09,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-20 19:48:09,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:48:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-20 19:48:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119519003] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:48:14,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:48:14,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-09-20 19:48:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570083686] [2024-09-20 19:48:14,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:48:14,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-20 19:48:14,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:48:14,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-20 19:48:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 19:48:14,864 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-20 19:48:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:48:16,710 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-09-20 19:48:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-20 19:48:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) Word has length 155 [2024-09-20 19:48:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:48:16,714 INFO L225 Difference]: With dead ends: 150 [2024-09-20 19:48:16,714 INFO L226 Difference]: Without dead ends: 146 [2024-09-20 19:48:16,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 19:48:16,716 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 90 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 19:48:16,716 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1523 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-20 19:48:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-20 19:48:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-09-20 19:48:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 24 states have return successors, (25), 24 states have call predecessors, (25), 4 states have call successors, (25) [2024-09-20 19:48:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-09-20 19:48:16,775 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 155 [2024-09-20 19:48:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:48:16,778 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-09-20 19:48:16,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-09-20 19:48:16,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-09-20 19:48:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-09-20 19:48:16,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:48:16,779 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:48:16,796 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-20 19:48:16,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-20 19:48:16,980 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:48:16,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash 254832628, now seen corresponding path program 10 times [2024-09-20 19:48:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:48:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949696866] [2024-09-20 19:48:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:48:16,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:48:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:17,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:48:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:17,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:48:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:17,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:17,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:17,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:18,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-20 19:48:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:19,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949696866] [2024-09-20 19:48:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949696866] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166474759] [2024-09-20 19:48:19,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 19:48:19,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:19,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:19,945 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-20 19:48:20,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 19:48:20,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:20,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-09-20 19:48:20,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-09-20 19:48:20,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:48:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-09-20 19:48:24,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166474759] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:48:24,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:48:24,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-09-20 19:48:24,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218439194] [2024-09-20 19:48:24,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:48:24,930 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-20 19:48:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:48:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-20 19:48:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-09-20 19:48:24,931 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-20 19:48:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:48:26,773 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2024-09-20 19:48:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 19:48:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) Word has length 162 [2024-09-20 19:48:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:48:26,775 INFO L225 Difference]: With dead ends: 156 [2024-09-20 19:48:26,775 INFO L226 Difference]: Without dead ends: 152 [2024-09-20 19:48:26,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-09-20 19:48:26,777 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 19:48:26,777 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1472 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-20 19:48:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-20 19:48:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2024-09-20 19:48:26,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 25 states have return successors, (26), 25 states have call predecessors, (26), 4 states have call successors, (26) [2024-09-20 19:48:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-09-20 19:48:26,837 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 162 [2024-09-20 19:48:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:48:26,837 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-09-20 19:48:26,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-09-20 19:48:26,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-09-20 19:48:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-20 19:48:26,838 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:48:26,838 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:48:26,851 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-20 19:48:27,040 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 19:48:27,041 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:48:27,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -528441364, now seen corresponding path program 11 times [2024-09-20 19:48:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:48:27,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770452734] [2024-09-20 19:48:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:48:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:48:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:27,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:48:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:27,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:48:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:27,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:27,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:28,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:29,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-09-20 19:48:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770452734] [2024-09-20 19:48:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770452734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26442228] [2024-09-20 19:48:30,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:48:30,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:30,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:30,399 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:30,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-20 19:48:30,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-20 19:48:30,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:30,590 WARN L260 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-09-20 19:48:30,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-09-20 19:48:30,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:48:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-09-20 19:48:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26442228] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:48:36,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:48:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2024-09-20 19:48:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523648573] [2024-09-20 19:48:36,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:48:36,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-20 19:48:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:48:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-20 19:48:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2024-09-20 19:48:36,607 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-20 19:48:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:48:38,720 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-09-20 19:48:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-20 19:48:38,721 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) Word has length 169 [2024-09-20 19:48:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:48:38,722 INFO L225 Difference]: With dead ends: 162 [2024-09-20 19:48:38,722 INFO L226 Difference]: Without dead ends: 158 [2024-09-20 19:48:38,723 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1012, Invalid=14738, Unknown=0, NotChecked=0, Total=15750 [2024-09-20 19:48:38,724 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 256 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-20 19:48:38,724 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1725 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-20 19:48:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-09-20 19:48:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2024-09-20 19:48:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 26 states have return successors, (27), 26 states have call predecessors, (27), 4 states have call successors, (27) [2024-09-20 19:48:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-09-20 19:48:38,790 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 169 [2024-09-20 19:48:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:48:38,791 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-09-20 19:48:38,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-09-20 19:48:38,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-09-20 19:48:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-09-20 19:48:38,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:48:38,792 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:48:38,808 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-20 19:48:38,992 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 19:48:38,993 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:48:38,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:38,993 INFO L85 PathProgramCache]: Analyzing trace with hash -109275084, now seen corresponding path program 11 times [2024-09-20 19:48:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:48:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945939009] [2024-09-20 19:48:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:48:38,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:48:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:39,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:48:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:39,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:48:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:39,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:39,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:40,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:41,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-20 19:48:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945939009] [2024-09-20 19:48:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945939009] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580141027] [2024-09-20 19:48:42,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 19:48:42,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:42,647 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:42,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-20 19:48:42,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-20 19:48:42,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:42,855 WARN L260 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-09-20 19:48:42,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-20 19:48:43,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:48:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-09-20 19:48:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580141027] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:48:48,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:48:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-09-20 19:48:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005549228] [2024-09-20 19:48:48,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:48:48,859 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-20 19:48:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:48:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-20 19:48:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-09-20 19:48:48,861 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-20 19:48:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:48:51,179 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2024-09-20 19:48:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 19:48:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) Word has length 176 [2024-09-20 19:48:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:48:51,180 INFO L225 Difference]: With dead ends: 168 [2024-09-20 19:48:51,180 INFO L226 Difference]: Without dead ends: 164 [2024-09-20 19:48:51,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-09-20 19:48:51,182 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 3147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:48:51,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1833 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-20 19:48:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-20 19:48:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2024-09-20 19:48:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 27 states have return successors, (28), 27 states have call predecessors, (28), 4 states have call successors, (28) [2024-09-20 19:48:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-09-20 19:48:51,256 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 176 [2024-09-20 19:48:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:48:51,257 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-09-20 19:48:51,257 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-09-20 19:48:51,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-09-20 19:48:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-09-20 19:48:51,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:48:51,258 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:48:51,271 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-20 19:48:51,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 19:48:51,462 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:48:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:48:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 399609968, now seen corresponding path program 12 times [2024-09-20 19:48:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:48:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251542241] [2024-09-20 19:48:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:48:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:48:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:51,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:48:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:51,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:48:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:52,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:52,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:52,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:52,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:53,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:54,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:48:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:48:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-20 19:48:55,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:48:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251542241] [2024-09-20 19:48:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251542241] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:48:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525555751] [2024-09-20 19:48:55,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:48:55,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:48:55,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:48:55,498 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:48:55,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-20 19:48:55,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 19:48:55,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:48:55,734 WARN L260 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-09-20 19:48:55,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:48:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-09-20 19:48:56,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:49:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 19:49:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525555751] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:49:02,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:49:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2024-09-20 19:49:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419964745] [2024-09-20 19:49:02,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:49:02,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-20 19:49:02,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:49:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-20 19:49:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2024-09-20 19:49:02,886 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-20 19:49:05,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:49:05,160 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2024-09-20 19:49:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-20 19:49:05,161 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) Word has length 183 [2024-09-20 19:49:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:49:05,163 INFO L225 Difference]: With dead ends: 174 [2024-09-20 19:49:05,163 INFO L226 Difference]: Without dead ends: 170 [2024-09-20 19:49:05,164 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1148, Invalid=17212, Unknown=0, NotChecked=0, Total=18360 [2024-09-20 19:49:05,165 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 150 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:49:05,165 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1815 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-20 19:49:05,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-20 19:49:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 99. [2024-09-20 19:49:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 28 states have return successors, (29), 28 states have call predecessors, (29), 4 states have call successors, (29) [2024-09-20 19:49:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-09-20 19:49:05,270 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 183 [2024-09-20 19:49:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:49:05,271 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-09-20 19:49:05,271 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-09-20 19:49:05,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-09-20 19:49:05,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-20 19:49:05,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:49:05,272 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:49:05,286 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-20 19:49:05,472 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-20 19:49:05,473 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:49:05,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:05,473 INFO L85 PathProgramCache]: Analyzing trace with hash 848247796, now seen corresponding path program 12 times [2024-09-20 19:49:05,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:49:05,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160378119] [2024-09-20 19:49:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:49:05,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:49:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:05,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:49:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:05,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:49:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:06,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:06,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:06,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:06,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:07,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:07,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:07,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:07,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:07,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:08,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-20 19:49:09,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:49:09,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160378119] [2024-09-20 19:49:09,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160378119] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:49:09,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647895356] [2024-09-20 19:49:09,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 19:49:09,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:49:09,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:49:09,665 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:49:09,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-20 19:49:09,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 19:49:09,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:49:09,922 WARN L260 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-09-20 19:49:09,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:49:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 19:49:10,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:49:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-09-20 19:49:17,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647895356] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:49:17,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:49:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-09-20 19:49:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107413748] [2024-09-20 19:49:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:49:17,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-20 19:49:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:49:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-20 19:49:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-09-20 19:49:17,728 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-20 19:49:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:49:20,465 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-09-20 19:49:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-20 19:49:20,465 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) Word has length 190 [2024-09-20 19:49:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:49:20,466 INFO L225 Difference]: With dead ends: 180 [2024-09-20 19:49:20,466 INFO L226 Difference]: Without dead ends: 176 [2024-09-20 19:49:20,469 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-09-20 19:49:20,469 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 50 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:49:20,469 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1813 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-20 19:49:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-20 19:49:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2024-09-20 19:49:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 29 states have return successors, (30), 29 states have call predecessors, (30), 4 states have call successors, (30) [2024-09-20 19:49:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-09-20 19:49:20,560 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 190 [2024-09-20 19:49:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:49:20,561 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-09-20 19:49:20,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-09-20 19:49:20,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-09-20 19:49:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-20 19:49:20,562 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:49:20,562 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:49:20,576 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-20 19:49:20,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-20 19:49:20,767 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:49:20,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2019521140, now seen corresponding path program 13 times [2024-09-20 19:49:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:49:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262006516] [2024-09-20 19:49:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:49:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:49:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:21,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:49:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:21,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:49:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:21,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:21,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:22,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:22,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:22,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:22,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:23,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:24,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-09-20 19:49:25,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:49:25,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262006516] [2024-09-20 19:49:25,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262006516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:49:25,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063280154] [2024-09-20 19:49:25,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:49:25,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:49:25,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:49:25,592 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:49:25,592 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-20 19:49:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:25,864 WARN L260 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-09-20 19:49:25,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:49:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-09-20 19:49:26,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:49:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-09-20 19:49:34,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063280154] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:49:34,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:49:34,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2024-09-20 19:49:34,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042461340] [2024-09-20 19:49:34,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:49:34,331 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-20 19:49:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:49:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-20 19:49:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2024-09-20 19:49:34,332 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-20 19:49:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:49:37,344 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2024-09-20 19:49:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-20 19:49:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) Word has length 197 [2024-09-20 19:49:37,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:49:37,346 INFO L225 Difference]: With dead ends: 186 [2024-09-20 19:49:37,346 INFO L226 Difference]: Without dead ends: 182 [2024-09-20 19:49:37,348 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1292, Invalid=19878, Unknown=0, NotChecked=0, Total=21170 [2024-09-20 19:49:37,348 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:49:37,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2366 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-20 19:49:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-20 19:49:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2024-09-20 19:49:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 30 states have return successors, (31), 30 states have call predecessors, (31), 4 states have call successors, (31) [2024-09-20 19:49:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-09-20 19:49:37,447 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 197 [2024-09-20 19:49:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:49:37,448 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-09-20 19:49:37,448 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-09-20 19:49:37,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-09-20 19:49:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 19:49:37,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:49:37,449 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:49:37,464 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-20 19:49:37,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:49:37,653 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:49:37,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1282120500, now seen corresponding path program 13 times [2024-09-20 19:49:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:49:37,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100370504] [2024-09-20 19:49:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:49:37,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:49:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:38,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:49:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:38,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:49:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:38,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:38,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:38,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:39,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:39,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:39,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:39,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:40,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:40,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:40,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:40,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:40,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:41,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-09-20 19:49:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:49:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100370504] [2024-09-20 19:49:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100370504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:49:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406184883] [2024-09-20 19:49:42,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 19:49:42,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:49:42,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:49:42,747 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:49:42,749 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-20 19:49:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:43,061 WARN L260 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-09-20 19:49:43,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:49:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-09-20 19:49:43,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:49:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-09-20 19:49:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406184883] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:49:51,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:49:51,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-09-20 19:49:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205391923] [2024-09-20 19:49:51,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:49:51,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-20 19:49:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:49:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-20 19:49:51,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-09-20 19:49:51,396 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-20 19:49:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:49:54,192 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2024-09-20 19:49:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-20 19:49:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) Word has length 204 [2024-09-20 19:49:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:49:54,193 INFO L225 Difference]: With dead ends: 192 [2024-09-20 19:49:54,194 INFO L226 Difference]: Without dead ends: 188 [2024-09-20 19:49:54,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-09-20 19:49:54,196 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:49:54,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2176 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-09-20 19:49:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-09-20 19:49:54,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2024-09-20 19:49:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 31 states have return successors, (32), 31 states have call predecessors, (32), 4 states have call successors, (32) [2024-09-20 19:49:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-09-20 19:49:54,310 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 204 [2024-09-20 19:49:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:49:54,310 INFO L474 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-09-20 19:49:54,311 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-09-20 19:49:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-09-20 19:49:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-09-20 19:49:54,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:49:54,312 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:49:54,325 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-20 19:49:54,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:49:54,517 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:49:54,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:49:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1002784248, now seen corresponding path program 14 times [2024-09-20 19:49:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:49:54,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968041863] [2024-09-20 19:49:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:49:54,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:49:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:54,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:49:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:54,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:49:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:55,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:55,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:56,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:56,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:56,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:56,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:57,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:57,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:57,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:57,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:57,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:58,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:49:59,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:49:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-09-20 19:50:00,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968041863] [2024-09-20 19:50:00,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968041863] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97979022] [2024-09-20 19:50:00,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:50:00,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:00,021 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:00,023 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-20 19:50:00,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:50:00,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:00,357 WARN L260 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-09-20 19:50:00,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-09-20 19:50:00,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-09-20 19:50:09,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97979022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:09,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:09,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2024-09-20 19:50:09,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498900672] [2024-09-20 19:50:09,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:09,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-20 19:50:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-20 19:50:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2024-09-20 19:50:09,137 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-20 19:50:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:12,412 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2024-09-20 19:50:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-20 19:50:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) Word has length 211 [2024-09-20 19:50:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:12,414 INFO L225 Difference]: With dead ends: 198 [2024-09-20 19:50:12,414 INFO L226 Difference]: Without dead ends: 194 [2024-09-20 19:50:12,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1444, Invalid=22736, Unknown=0, NotChecked=0, Total=24180 [2024-09-20 19:50:12,417 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:12,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2354 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-20 19:50:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-09-20 19:50:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2024-09-20 19:50:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 32 states have return successors, (33), 32 states have call predecessors, (33), 4 states have call successors, (33) [2024-09-20 19:50:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-09-20 19:50:12,538 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 211 [2024-09-20 19:50:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:12,538 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-09-20 19:50:12,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-09-20 19:50:12,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-09-20 19:50:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-20 19:50:12,539 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:12,540 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:12,553 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-20 19:50:12,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:12,740 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:12,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -203622924, now seen corresponding path program 14 times [2024-09-20 19:50:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507439856] [2024-09-20 19:50:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:13,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:13,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:50:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:13,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:13,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:14,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:15,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:15,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:15,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:15,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:16,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:16,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:16,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:16,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:16,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:17,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 644 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2024-09-20 19:50:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507439856] [2024-09-20 19:50:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507439856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620668801] [2024-09-20 19:50:18,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:50:18,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:18,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:18,718 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:18,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-20 19:50:19,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:50:19,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:19,077 WARN L260 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 248 conjuncts are in the unsatisfiable core [2024-09-20 19:50:19,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2024-09-20 19:50:19,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 1232 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-20 19:50:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620668801] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:29,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 93] total 102 [2024-09-20 19:50:29,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928460324] [2024-09-20 19:50:29,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:29,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-20 19:50:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-20 19:50:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=9945, Unknown=0, NotChecked=0, Total=10302 [2024-09-20 19:50:29,021 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-20 19:50:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:32,624 INFO L93 Difference]: Finished difference Result 204 states and 206 transitions. [2024-09-20 19:50:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-20 19:50:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) Word has length 218 [2024-09-20 19:50:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:32,629 INFO L225 Difference]: With dead ends: 204 [2024-09-20 19:50:32,630 INFO L226 Difference]: Without dead ends: 200 [2024-09-20 19:50:32,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1517, Invalid=23923, Unknown=0, NotChecked=0, Total=25440 [2024-09-20 19:50:32,631 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:32,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2420 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-20 19:50:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-20 19:50:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 114. [2024-09-20 19:50:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 33 states have return successors, (34), 33 states have call predecessors, (34), 4 states have call successors, (34) [2024-09-20 19:50:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2024-09-20 19:50:32,777 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 218 [2024-09-20 19:50:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:32,777 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2024-09-20 19:50:32,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.693069306930693) internal successors, (171), 69 states have internal predecessors, (171), 33 states have call successors, (35), 1 states have call predecessors, (35), 32 states have return successors, (62), 34 states have call predecessors, (62), 33 states have call successors, (62) [2024-09-20 19:50:32,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2024-09-20 19:50:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-09-20 19:50:32,779 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:32,779 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:32,793 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:32,982 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-20 19:50:32,982 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -232387844, now seen corresponding path program 15 times [2024-09-20 19:50:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636957894] [2024-09-20 19:50:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:33,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:33,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:50:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:33,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:34,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:34,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:34,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:35,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:36,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:37,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:37,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:37,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:37,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:37,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:38,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 690 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2024-09-20 19:50:39,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636957894] [2024-09-20 19:50:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636957894] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:39,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318010762] [2024-09-20 19:50:39,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:50:39,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:39,527 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:39,531 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-20 19:50:39,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-20 19:50:39,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:50:39,933 WARN L260 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 256 conjuncts are in the unsatisfiable core [2024-09-20 19:50:39,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:50:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2024-09-20 19:50:40,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:50:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 1320 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-09-20 19:50:48,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318010762] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:50:48,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:50:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 96] total 106 [2024-09-20 19:50:48,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676159297] [2024-09-20 19:50:48,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:50:48,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-20 19:50:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:50:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-20 19:50:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=10756, Unknown=0, NotChecked=0, Total=11130 [2024-09-20 19:50:48,990 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-20 19:50:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:50:52,479 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2024-09-20 19:50:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-09-20 19:50:52,480 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) Word has length 225 [2024-09-20 19:50:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:50:52,481 INFO L225 Difference]: With dead ends: 210 [2024-09-20 19:50:52,481 INFO L226 Difference]: Without dead ends: 206 [2024-09-20 19:50:52,482 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1604, Invalid=25786, Unknown=0, NotChecked=0, Total=27390 [2024-09-20 19:50:52,482 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 196 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 4327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-20 19:50:52,483 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2624 Invalid, 4327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-20 19:50:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-09-20 19:50:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 117. [2024-09-20 19:50:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 34 states have return successors, (35), 34 states have call predecessors, (35), 4 states have call successors, (35) [2024-09-20 19:50:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2024-09-20 19:50:52,624 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 225 [2024-09-20 19:50:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:50:52,625 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2024-09-20 19:50:52,625 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 104 states have (on average 1.7019230769230769) internal successors, (177), 72 states have internal predecessors, (177), 35 states have call successors, (37), 1 states have call predecessors, (37), 33 states have return successors, (64), 35 states have call predecessors, (64), 35 states have call successors, (64) [2024-09-20 19:50:52,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2024-09-20 19:50:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-09-20 19:50:52,626 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:50:52,626 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:50:52,639 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-20 19:50:52,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-20 19:50:52,830 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:50:52,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:50:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2021035060, now seen corresponding path program 15 times [2024-09-20 19:50:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:50:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973815306] [2024-09-20 19:50:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:50:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:50:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:53,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:50:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:53,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:50:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:53,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:54,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:54,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:54,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:55,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:55,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:55,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:56,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:56,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:56,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:56,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:57,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:57,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:57,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:57,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:57,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:58,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:50:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:50:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 735 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2024-09-20 19:50:59,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:50:59,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973815306] [2024-09-20 19:50:59,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973815306] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 19:50:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986962057] [2024-09-20 19:50:59,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 19:50:59,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:50:59,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:50:59,877 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 19:50:59,878 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-20 19:51:00,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-20 19:51:00,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:51:00,300 WARN L260 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 264 conjuncts are in the unsatisfiable core [2024-09-20 19:51:00,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:51:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2024-09-20 19:51:00,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:51:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-09-20 19:51:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986962057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:51:10,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 19:51:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 99] total 109 [2024-09-20 19:51:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91272670] [2024-09-20 19:51:10,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 19:51:10,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-20 19:51:10,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:51:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-20 19:51:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=11389, Unknown=0, NotChecked=0, Total=11772 [2024-09-20 19:51:10,901 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) [2024-09-20 19:51:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:51:15,068 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2024-09-20 19:51:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-20 19:51:15,068 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) Word has length 232 [2024-09-20 19:51:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:51:15,069 INFO L225 Difference]: With dead ends: 216 [2024-09-20 19:51:15,069 INFO L226 Difference]: Without dead ends: 212 [2024-09-20 19:51:15,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1685, Invalid=27385, Unknown=0, NotChecked=0, Total=29070 [2024-09-20 19:51:15,073 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 84 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 5046 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 5102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-20 19:51:15,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2721 Invalid, 5102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 5046 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-20 19:51:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-09-20 19:51:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 120. [2024-09-20 19:51:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 80 states have internal predecessors, (81), 5 states have call successors, (5), 4 states have call predecessors, (5), 35 states have return successors, (36), 35 states have call predecessors, (36), 4 states have call successors, (36) [2024-09-20 19:51:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2024-09-20 19:51:15,285 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 232 [2024-09-20 19:51:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:51:15,285 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2024-09-20 19:51:15,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 74 states have internal predecessors, (182), 36 states have call successors, (38), 1 states have call predecessors, (38), 34 states have return successors, (66), 36 states have call predecessors, (66), 36 states have call successors, (66) [2024-09-20 19:51:15,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:51:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2024-09-20 19:51:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-09-20 19:51:15,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:51:15,286 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:51:15,301 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-20 19:51:15,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-20 19:51:15,487 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:51:15,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:51:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -30621312, now seen corresponding path program 16 times [2024-09-20 19:51:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:51:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551942646] [2024-09-20 19:51:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:51:15,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:51:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:16,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:51:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:16,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-09-20 19:51:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:16,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:51:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:16,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:51:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:17,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:51:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:51:17,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 19:51:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat