./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/mcmillan2006.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/mcmillan2006.i -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 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-12 21:44:30,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 21:44:30,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 21:44:30,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 21:44:30,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 21:44:30,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 21:44:30,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 21:44:30,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 21:44:30,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 21:44:30,911 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 21:44:30,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 21:44:30,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 21:44:30,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 21:44:30,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 21:44:30,913 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 21:44:30,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 21:44:30,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 21:44:30,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 21:44:30,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 21:44:30,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 21:44:30,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 21:44:30,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 21:44:30,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 21:44:30,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 21:44:30,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 21:44:30,920 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 21:44:30,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 21:44:30,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 21:44:30,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 21:44:30,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 21:44:30,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 21:44:30,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 21:44:30,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:44:30,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 21:44:30,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 21:44:30,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 21:44:30,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 21:44:30,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 21:44:30,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 21:44:30,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 21:44:30,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 21:44:30,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 21:44:30,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 21:44:31,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 21:44:31,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 21:44:31,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 21:44:31,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 21:44:31,233 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 21:44:31,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/mcmillan2006.i [2024-09-12 21:44:32,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 21:44:32,781 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 21:44:32,782 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/mcmillan2006.i [2024-09-12 21:44:32,789 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d4544e5af/48f2fa4d15784e0ebc1d24cba1709de8/FLAG3714e7f04 [2024-09-12 21:44:33,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d4544e5af/48f2fa4d15784e0ebc1d24cba1709de8 [2024-09-12 21:44:33,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 21:44:33,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 21:44:33,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 21:44:33,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 21:44:33,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 21:44:33,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a2f602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33, skipping insertion in model container [2024-09-12 21:44:33,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,220 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 21:44:33,357 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2024-09-12 21:44:33,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:44:33,382 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 21:44:33,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2024-09-12 21:44:33,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 21:44:33,413 INFO L204 MainTranslator]: Completed translation [2024-09-12 21:44:33,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33 WrapperNode [2024-09-12 21:44:33,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 21:44:33,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 21:44:33,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 21:44:33,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 21:44:33,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,435 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 21:44:33,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 21:44:33,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 21:44:33,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 21:44:33,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 21:44:33,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,455 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-12 21:44:33,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,456 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 21:44:33,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 21:44:33,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 21:44:33,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 21:44:33,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (1/1) ... [2024-09-12 21:44:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 21:44:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:33,501 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) [2024-09-12 21:44:33,505 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 [2024-09-12 21:44:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 21:44:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 21:44:33,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 21:44:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 21:44:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 21:44:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 21:44:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 21:44:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 21:44:33,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 21:44:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-12 21:44:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 21:44:33,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 21:44:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 21:44:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 21:44:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 21:44:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 21:44:33,608 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 21:44:33,610 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 21:44:33,738 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-12 21:44:33,739 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 21:44:33,760 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 21:44:33,760 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 21:44:33,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:44:33 BoogieIcfgContainer [2024-09-12 21:44:33,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 21:44:33,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 21:44:33,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 21:44:33,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 21:44:33,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 09:44:33" (1/3) ... [2024-09-12 21:44:33,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622610c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:44:33, skipping insertion in model container [2024-09-12 21:44:33,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 09:44:33" (2/3) ... [2024-09-12 21:44:33,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622610c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 09:44:33, skipping insertion in model container [2024-09-12 21:44:33,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 09:44:33" (3/3) ... [2024-09-12 21:44:33,770 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2024-09-12 21:44:33,783 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 21:44:33,783 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 21:44:33,834 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 21:44:33,840 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;@1eb71d9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 21:44:33,840 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 21:44:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:44:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 21:44:33,853 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:33,853 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:33,854 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:33,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -94361564, now seen corresponding path program 1 times [2024-09-12 21:44:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749039367] [2024-09-12 21:44:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:33,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:34,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749039367] [2024-09-12 21:44:34,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749039367] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:44:34,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:44:34,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 21:44:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197721131] [2024-09-12 21:44:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:44:34,054 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 21:44:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:34,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 21:44:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 21:44:34,081 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:34,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:34,100 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-09-12 21:44:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 21:44:34,102 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 21:44:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:34,107 INFO L225 Difference]: With dead ends: 37 [2024-09-12 21:44:34,107 INFO L226 Difference]: Without dead ends: 17 [2024-09-12 21:44:34,109 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 21:44:34,112 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:34,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:44:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-12 21:44:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-12 21:44:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:44:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-12 21:44:34,139 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2024-09-12 21:44:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:34,139 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-12 21:44:34,139 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:34,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-12 21:44:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 21:44:34,141 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:34,141 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:34,141 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 21:44:34,141 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:34,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1124416354, now seen corresponding path program 1 times [2024-09-12 21:44:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:34,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112363781] [2024-09-12 21:44:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112363781] [2024-09-12 21:44:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112363781] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 21:44:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 21:44:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 21:44:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603868272] [2024-09-12 21:44:34,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 21:44:34,314 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 21:44:34,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:34,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 21:44:34,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:44:34,315 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:34,354 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-12 21:44:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 21:44:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-12 21:44:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:34,356 INFO L225 Difference]: With dead ends: 29 [2024-09-12 21:44:34,356 INFO L226 Difference]: Without dead ends: 18 [2024-09-12 21:44:34,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 21:44:34,358 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:34,360 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:44:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-12 21:44:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-12 21:44:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 21:44:34,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-12 21:44:34,367 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-12 21:44:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:34,368 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-12 21:44:34,368 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:34,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-12 21:44:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 21:44:34,369 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:34,369 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:34,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 21:44:34,370 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:34,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1626584132, now seen corresponding path program 1 times [2024-09-12 21:44:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605586990] [2024-09-12 21:44:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:34,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:34,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605586990] [2024-09-12 21:44:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605586990] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740411434] [2024-09-12 21:44:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:34,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:34,857 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) [2024-09-12 21:44:34,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 21:44:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:34,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 21:44:34,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:34,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:44:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:35,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:35,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-09-12 21:44:35,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-09-12 21:44:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740411434] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:35,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:35,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-09-12 21:44:35,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079795251] [2024-09-12 21:44:35,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:35,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 21:44:35,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:35,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 21:44:35,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-12 21:44:35,174 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:35,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:35,286 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-12 21:44:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:44:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-09-12 21:44:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:35,287 INFO L225 Difference]: With dead ends: 28 [2024-09-12 21:44:35,288 INFO L226 Difference]: Without dead ends: 26 [2024-09-12 21:44:35,288 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-09-12 21:44:35,289 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:35,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 76 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:44:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-12 21:44:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-09-12 21:44:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:44:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-12 21:44:35,297 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2024-09-12 21:44:35,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:35,297 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-12 21:44:35,298 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 21:44:35,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-12 21:44:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 21:44:35,300 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:35,300 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:35,317 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 21:44:35,504 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:35,505 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:35,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1746762740, now seen corresponding path program 1 times [2024-09-12 21:44:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:35,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298127730] [2024-09-12 21:44:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:35,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:35,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:35,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-12 21:44:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298127730] [2024-09-12 21:44:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298127730] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287086966] [2024-09-12 21:44:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:35,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:35,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:35,644 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) [2024-09-12 21:44:35,646 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 21:44:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:35,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 21:44:35,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:35,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:35,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287086966] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:35,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:35,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-12 21:44:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871032224] [2024-09-12 21:44:35,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:35,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 21:44:35,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 21:44:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:44:35,839 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:35,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:35,892 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-09-12 21:44:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 21:44:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2024-09-12 21:44:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:35,895 INFO L225 Difference]: With dead ends: 39 [2024-09-12 21:44:35,895 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 21:44:35,895 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-12 21:44:35,898 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:35,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:44:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 21:44:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-12 21:44:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-12 21:44:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-12 21:44:35,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-09-12 21:44:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:35,911 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-12 21:44:35,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:35,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-12 21:44:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 21:44:35,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:35,914 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:35,930 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 21:44:36,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:36,115 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:36,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1333923114, now seen corresponding path program 2 times [2024-09-12 21:44:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528055271] [2024-09-12 21:44:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:36,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:36,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 21:44:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528055271] [2024-09-12 21:44:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528055271] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109939388] [2024-09-12 21:44:36,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:44:36,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:36,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:36,339 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) [2024-09-12 21:44:36,342 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 21:44:36,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:44:36,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:36,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 21:44:36,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:36,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:44:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:36,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:36,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:44:36,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:44:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 21:44:36,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109939388] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:36,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 19 [2024-09-12 21:44:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259581001] [2024-09-12 21:44:36,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:36,737 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-12 21:44:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-12 21:44:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-09-12 21:44:36,738 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:36,929 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-09-12 21:44:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 21:44:36,929 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2024-09-12 21:44:36,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:36,931 INFO L225 Difference]: With dead ends: 36 [2024-09-12 21:44:36,932 INFO L226 Difference]: Without dead ends: 34 [2024-09-12 21:44:36,932 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:44:36,933 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:36,933 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 143 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:44:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-12 21:44:36,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-12 21:44:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-12 21:44:36,945 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 22 [2024-09-12 21:44:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:36,945 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-12 21:44:36,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 17 states have internal predecessors, (32), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:36,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-12 21:44:36,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-12 21:44:36,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:36,947 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:36,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 21:44:37,147 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:37,148 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:37,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -815600930, now seen corresponding path program 3 times [2024-09-12 21:44:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:37,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871306036] [2024-09-12 21:44:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:37,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:37,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 21:44:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:37,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:44:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:44:37,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:37,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871306036] [2024-09-12 21:44:37,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871306036] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:37,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520991723] [2024-09-12 21:44:37,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:44:37,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:37,270 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) [2024-09-12 21:44:37,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 21:44:37,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-12 21:44:37,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:37,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 21:44:37,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:44:37,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:44:37,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520991723] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:37,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-12 21:44:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121950443] [2024-09-12 21:44:37,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:37,491 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 21:44:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 21:44:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 21:44:37,493 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:44:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:37,553 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-09-12 21:44:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 21:44:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2024-09-12 21:44:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:37,556 INFO L225 Difference]: With dead ends: 50 [2024-09-12 21:44:37,556 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 21:44:37,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 21:44:37,557 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:37,557 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 21:44:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 21:44:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-12 21:44:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 21:44:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-12 21:44:37,572 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2024-09-12 21:44:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:37,572 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-12 21:44:37,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:44:37,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-12 21:44:37,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-12 21:44:37,573 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:37,573 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:37,594 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 21:44:37,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:37,774 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:37,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2003727868, now seen corresponding path program 4 times [2024-09-12 21:44:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706036818] [2024-09-12 21:44:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:38,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:38,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 21:44:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:38,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:44:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:44:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706036818] [2024-09-12 21:44:38,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706036818] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48455524] [2024-09-12 21:44:38,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:44:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:38,055 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) [2024-09-12 21:44:38,061 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 21:44:38,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:44:38,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:38,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 21:44:38,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:38,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:44:38,661 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:44:38,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:44:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 21:44:38,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:38,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48455524] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:38,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:44:38,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 23 [2024-09-12 21:44:38,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189982495] [2024-09-12 21:44:38,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:38,832 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 21:44:38,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:38,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 21:44:38,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-09-12 21:44:38,835 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:44:43,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:44:47,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:44:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:47,491 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-09-12 21:44:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:44:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 30 [2024-09-12 21:44:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:47,493 INFO L225 Difference]: With dead ends: 64 [2024-09-12 21:44:47,493 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 21:44:47,494 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=1431, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:44:47,494 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:47,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 255 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2024-09-12 21:44:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 21:44:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-12 21:44:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:44:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-09-12 21:44:47,505 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 30 [2024-09-12 21:44:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:47,505 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-09-12 21:44:47,506 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 21 states have internal predecessors, (35), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 21:44:47,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-09-12 21:44:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 21:44:47,507 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:47,507 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:47,523 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 21:44:47,711 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 21:44:47,712 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:47,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash -868360470, now seen corresponding path program 5 times [2024-09-12 21:44:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558330772] [2024-09-12 21:44:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:48,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:48,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:44:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:48,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:44:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:48,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:44:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:44:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558330772] [2024-09-12 21:44:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558330772] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379808272] [2024-09-12 21:44:48,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:44:48,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:48,058 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) [2024-09-12 21:44:48,060 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 21:44:48,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-12 21:44:48,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:48,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-12 21:44:48,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:48,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:44:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:44:48,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:48,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:44:48,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:44:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 21:44:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379808272] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:48,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 27 [2024-09-12 21:44:48,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836340573] [2024-09-12 21:44:48,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:48,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 21:44:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:48,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 21:44:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-09-12 21:44:48,718 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:44:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:49,012 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-12 21:44:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 21:44:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 38 [2024-09-12 21:44:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:49,014 INFO L225 Difference]: With dead ends: 52 [2024-09-12 21:44:49,014 INFO L226 Difference]: Without dead ends: 50 [2024-09-12 21:44:49,014 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:44:49,015 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:49,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 216 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:44:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-12 21:44:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-09-12 21:44:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:44:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-12 21:44:49,028 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2024-09-12 21:44:49,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:49,028 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-12 21:44:49,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:44:49,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-12 21:44:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-12 21:44:49,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:49,030 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:49,046 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 21:44:49,230 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:49,231 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:49,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:49,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1489740062, now seen corresponding path program 6 times [2024-09-12 21:44:49,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:49,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098242997] [2024-09-12 21:44:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 21:44:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:44:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:44:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:44:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:49,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098242997] [2024-09-12 21:44:49,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098242997] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:49,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630228639] [2024-09-12 21:44:49,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:44:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:49,391 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) [2024-09-12 21:44:49,393 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 21:44:49,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-09-12 21:44:49,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:49,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 21:44:49,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:49,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:49,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630228639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:49,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:49,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-12 21:44:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883545807] [2024-09-12 21:44:49,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:49,690 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 21:44:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 21:44:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:44:49,691 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:44:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:49,773 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2024-09-12 21:44:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 21:44:49,773 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2024-09-12 21:44:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:49,774 INFO L225 Difference]: With dead ends: 72 [2024-09-12 21:44:49,774 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 21:44:49,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-12 21:44:49,776 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:49,777 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:44:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 21:44:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-12 21:44:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 21:44:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-09-12 21:44:49,791 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2024-09-12 21:44:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:49,792 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-09-12 21:44:49,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:44:49,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-09-12 21:44:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-09-12 21:44:49,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:49,794 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:49,813 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 21:44:49,996 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:49,997 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:49,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 977875004, now seen corresponding path program 7 times [2024-09-12 21:44:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963065059] [2024-09-12 21:44:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:44:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:44:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:44:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:44:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:50,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963065059] [2024-09-12 21:44:50,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963065059] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:50,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838112824] [2024-09-12 21:44:50,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:44:50,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:50,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:50,321 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) [2024-09-12 21:44:50,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 21:44:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:50,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 21:44:50,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:50,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:44:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:50,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:51,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:44:51,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:44:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-12 21:44:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838112824] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:51,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 16] total 31 [2024-09-12 21:44:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974587669] [2024-09-12 21:44:51,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:51,027 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 21:44:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 21:44:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2024-09-12 21:44:51,028 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 11 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:44:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:51,300 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-12 21:44:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 21:44:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 11 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 46 [2024-09-12 21:44:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:51,301 INFO L225 Difference]: With dead ends: 60 [2024-09-12 21:44:51,301 INFO L226 Difference]: Without dead ends: 58 [2024-09-12 21:44:51,302 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:44:51,302 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:51,302 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 254 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:44:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-12 21:44:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-09-12 21:44:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:44:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-12 21:44:51,315 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 46 [2024-09-12 21:44:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:51,315 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-12 21:44:51,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 29 states have internal predecessors, (50), 11 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:44:51,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-12 21:44:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 21:44:51,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:51,316 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:51,333 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 21:44:51,520 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:51,521 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:51,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:51,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1649176692, now seen corresponding path program 8 times [2024-09-12 21:44:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:51,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110099178] [2024-09-12 21:44:51,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:51,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 21:44:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:44:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:44:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:44:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:44:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:44:51,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:51,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110099178] [2024-09-12 21:44:51,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110099178] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864596764] [2024-09-12 21:44:51,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:44:51,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:51,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:51,741 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) [2024-09-12 21:44:51,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 21:44:51,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:44:51,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:51,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 21:44:51,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:44:51,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:44:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864596764] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:44:52,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:44:52,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-12 21:44:52,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264080636] [2024-09-12 21:44:52,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:52,060 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-12 21:44:52,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-12 21:44:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:44:52,061 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:44:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:44:52,155 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2024-09-12 21:44:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 21:44:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 53 [2024-09-12 21:44:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:44:52,157 INFO L225 Difference]: With dead ends: 83 [2024-09-12 21:44:52,157 INFO L226 Difference]: Without dead ends: 57 [2024-09-12 21:44:52,157 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 100 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-12 21:44:52,158 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:44:52,158 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:44:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-12 21:44:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-12 21:44:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 21:44:52,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-12 21:44:52,174 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2024-09-12 21:44:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:44:52,174 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-12 21:44:52,174 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:44:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-12 21:44:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-12 21:44:52,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:44:52,175 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:44:52,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-12 21:44:52,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 21:44:52,376 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:44:52,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:44:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1278681258, now seen corresponding path program 9 times [2024-09-12 21:44:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:44:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934901948] [2024-09-12 21:44:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:44:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:44:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:44:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-12 21:44:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:44:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:44:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:44:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:44:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:44:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:44:52,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:44:52,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934901948] [2024-09-12 21:44:52,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934901948] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:52,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391682715] [2024-09-12 21:44:52,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:44:52,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:44:52,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:44:52,774 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) [2024-09-12 21:44:52,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 21:44:52,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 21:44:52,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:44:52,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:44:52,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:44:52,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:44:54,001 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:44:54,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:44:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 21:44:54,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:44:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391682715] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:44:54,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:44:54,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2024-09-12 21:44:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647414279] [2024-09-12 21:44:54,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:44:54,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 21:44:54,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:44:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 21:44:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 21:44:54,183 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:44:58,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:02,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:06,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:10,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:11,216 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2024-09-12 21:45:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 21:45:11,217 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 54 [2024-09-12 21:45:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:11,217 INFO L225 Difference]: With dead ends: 105 [2024-09-12 21:45:11,218 INFO L226 Difference]: Without dead ends: 67 [2024-09-12 21:45:11,219 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 45 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=361, Invalid=3299, Unknown=0, NotChecked=0, Total=3660 [2024-09-12 21:45:11,219 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 40 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 21 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:11,219 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 273 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 753 Invalid, 4 Unknown, 0 Unchecked, 16.5s Time] [2024-09-12 21:45:11,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-12 21:45:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-12 21:45:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 21:45:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-09-12 21:45:11,234 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 54 [2024-09-12 21:45:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:11,234 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-09-12 21:45:11,234 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:45:11,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-09-12 21:45:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-12 21:45:11,235 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:11,235 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:11,249 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 21:45:11,439 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 21:45:11,439 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:11,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1382054524, now seen corresponding path program 10 times [2024-09-12 21:45:11,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:11,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880505944] [2024-09-12 21:45:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-12 21:45:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:45:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:45:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:45:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:45:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:45:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:45:11,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880505944] [2024-09-12 21:45:11,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880505944] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899317371] [2024-09-12 21:45:11,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:45:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:11,860 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) [2024-09-12 21:45:11,861 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-12 21:45:11,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:45:11,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:45:11,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 21:45:11,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:12,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:45:13,303 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:45:13,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:45:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 51 proven. 46 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 21:45:13,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899317371] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:13,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:45:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 39 [2024-09-12 21:45:13,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848220463] [2024-09-12 21:45:13,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:13,471 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-12 21:45:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-12 21:45:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 21:45:13,472 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 14 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:45:17,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:21,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:26,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:30,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:34,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:38,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:38,665 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2024-09-12 21:45:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-12 21:45:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 14 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 62 [2024-09-12 21:45:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:38,667 INFO L225 Difference]: With dead ends: 120 [2024-09-12 21:45:38,667 INFO L226 Difference]: Without dead ends: 75 [2024-09-12 21:45:38,668 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 52 SyntacticMatches, 13 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=424, Invalid=4132, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:45:38,668 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 20 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:38,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 313 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1135 Invalid, 6 Unknown, 0 Unchecked, 24.6s Time] [2024-09-12 21:45:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-12 21:45:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-09-12 21:45:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-12 21:45:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-09-12 21:45:38,691 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 62 [2024-09-12 21:45:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:38,691 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-09-12 21:45:38,692 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 37 states have internal predecessors, (59), 14 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:45:38,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-09-12 21:45:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-09-12 21:45:38,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:38,693 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:38,705 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-12 21:45:38,893 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:38,893 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:38,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1876307350, now seen corresponding path program 11 times [2024-09-12 21:45:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532512973] [2024-09-12 21:45:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:45:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:45:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:45:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:45:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:45:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:45:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:45:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:45:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532512973] [2024-09-12 21:45:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532512973] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071518604] [2024-09-12 21:45:39,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:45:39,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:39,433 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) [2024-09-12 21:45:39,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-12 21:45:39,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-12 21:45:39,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:45:39,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-12 21:45:39,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:39,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:45:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:45:40,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:40,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:45:40,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:45:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-12 21:45:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071518604] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:45:40,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:45:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 43 [2024-09-12 21:45:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492156383] [2024-09-12 21:45:40,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:40,626 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-12 21:45:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-12 21:45:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1676, Unknown=0, NotChecked=0, Total=1806 [2024-09-12 21:45:40,627 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 43 states, 42 states have (on average 1.619047619047619) internal successors, (68), 41 states have internal predecessors, (68), 17 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:45:41,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:41,162 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2024-09-12 21:45:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 21:45:41,163 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.619047619047619) internal successors, (68), 41 states have internal predecessors, (68), 17 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 70 [2024-09-12 21:45:41,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:41,164 INFO L225 Difference]: With dead ends: 84 [2024-09-12 21:45:41,164 INFO L226 Difference]: Without dead ends: 82 [2024-09-12 21:45:41,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=2004, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:45:41,165 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:41,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 405 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 21:45:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-09-12 21:45:41,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-09-12 21:45:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:45:41,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-12 21:45:41,185 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2024-09-12 21:45:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:41,186 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-12 21:45:41,186 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.619047619047619) internal successors, (68), 41 states have internal predecessors, (68), 17 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:45:41,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-12 21:45:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-12 21:45:41,187 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:41,187 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:41,204 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-12 21:45:41,387 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 21:45:41,388 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:41,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash 346996126, now seen corresponding path program 12 times [2024-09-12 21:45:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930552082] [2024-09-12 21:45:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 21:45:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:45:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:45:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:45:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:45:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:45:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:45:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:45:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:41,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930552082] [2024-09-12 21:45:41,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930552082] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:41,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287312197] [2024-09-12 21:45:41,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:45:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:41,688 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) [2024-09-12 21:45:41,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-12 21:45:41,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-09-12 21:45:41,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:45:41,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 21:45:41,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:42,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:42,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287312197] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:45:42,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:45:42,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-09-12 21:45:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343004685] [2024-09-12 21:45:42,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:42,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-12 21:45:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:42,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-12 21:45:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:45:42,234 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:45:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:42,360 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2024-09-12 21:45:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-12 21:45:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 77 [2024-09-12 21:45:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:42,362 INFO L225 Difference]: With dead ends: 116 [2024-09-12 21:45:42,362 INFO L226 Difference]: Without dead ends: 81 [2024-09-12 21:45:42,363 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 145 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-12 21:45:42,363 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:42,364 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:45:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-09-12 21:45:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-09-12 21:45:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 21:45:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-09-12 21:45:42,386 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2024-09-12 21:45:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:42,386 INFO L474 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-09-12 21:45:42,386 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:45:42,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-09-12 21:45:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-12 21:45:42,388 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:42,388 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:42,405 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-12 21:45:42,591 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 21:45:42,591 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:42,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 58217660, now seen corresponding path program 13 times [2024-09-12 21:45:42,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:42,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711170057] [2024-09-12 21:45:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:42,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:45:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:45:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:45:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:45:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:45:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:45:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:45:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:45:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711170057] [2024-09-12 21:45:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711170057] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978799847] [2024-09-12 21:45:43,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:45:43,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:43,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:43,121 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) [2024-09-12 21:45:43,123 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-12 21:45:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:43,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 21:45:43,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:43,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:45:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:44,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:44,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:45:44,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:45:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-12 21:45:44,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978799847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:45:44,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:45:44,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 47 [2024-09-12 21:45:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788661864] [2024-09-12 21:45:44,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:44,632 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:45:44,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:45:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2019, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:45:44,633 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:45:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:45,269 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2024-09-12 21:45:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-12 21:45:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 78 [2024-09-12 21:45:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:45,270 INFO L225 Difference]: With dead ends: 92 [2024-09-12 21:45:45,271 INFO L226 Difference]: Without dead ends: 90 [2024-09-12 21:45:45,271 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 136 SyntacticMatches, 17 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 21:45:45,272 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:45,272 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 471 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 21:45:45,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-12 21:45:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-09-12 21:45:45,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:45:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-12 21:45:45,293 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 78 [2024-09-12 21:45:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:45,293 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-12 21:45:45,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.608695652173913) internal successors, (74), 45 states have internal predecessors, (74), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:45:45,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-12 21:45:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-12 21:45:45,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:45,294 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:45,312 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-12 21:45:45,498 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 21:45:45,499 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:45,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1937089780, now seen corresponding path program 14 times [2024-09-12 21:45:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881833566] [2024-09-12 21:45:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 21:45:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:45:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:45:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:45:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:45:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:45:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:45:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:45:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:45:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:45:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881833566] [2024-09-12 21:45:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881833566] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019266315] [2024-09-12 21:45:45,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:45:45,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:45,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:45,835 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) [2024-09-12 21:45:45,837 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-12 21:45:45,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:45:45,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:45:45,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 21:45:45,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:45:46,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:45:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019266315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:45:46,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:45:46,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-09-12 21:45:46,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027370965] [2024-09-12 21:45:46,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:46,354 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-12 21:45:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:46,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-12 21:45:46,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:45:46,356 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:45:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:45:46,522 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2024-09-12 21:45:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-12 21:45:46,522 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 85 [2024-09-12 21:45:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:45:46,524 INFO L225 Difference]: With dead ends: 127 [2024-09-12 21:45:46,524 INFO L226 Difference]: Without dead ends: 89 [2024-09-12 21:45:46,524 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 160 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-12 21:45:46,525 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:45:46,525 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:45:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-12 21:45:46,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-09-12 21:45:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-12 21:45:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-09-12 21:45:46,548 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2024-09-12 21:45:46,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:45:46,549 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-09-12 21:45:46,549 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 35 states have internal predecessors, (64), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:45:46,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-09-12 21:45:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-09-12 21:45:46,550 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:45:46,550 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:45:46,567 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-12 21:45:46,750 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 21:45:46,750 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:45:46,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:45:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1607595050, now seen corresponding path program 15 times [2024-09-12 21:45:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:45:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519358066] [2024-09-12 21:45:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:45:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:45:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:45:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 21:45:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:45:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:45:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:45:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:45:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:45:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:45:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:45:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:45:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:45:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 18 proven. 181 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:45:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:45:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519358066] [2024-09-12 21:45:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519358066] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714380426] [2024-09-12 21:45:47,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:45:47,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:45:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:45:47,290 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) [2024-09-12 21:45:47,293 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-12 21:45:47,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 21:45:47,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:45:47,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:45:47,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:45:47,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:45:49,769 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:45:49,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:45:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 117 proven. 82 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-12 21:45:49,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:45:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714380426] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:45:49,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:45:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 51 [2024-09-12 21:45:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263714137] [2024-09-12 21:45:49,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:45:49,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-12 21:45:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:45:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-12 21:45:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2468, Unknown=0, NotChecked=0, Total=2756 [2024-09-12 21:45:49,991 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 20 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:45:54,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:45:58,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:02,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:06,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:11,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:15,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:19,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:23,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:46:23,857 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2024-09-12 21:46:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 21:46:23,858 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 20 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 86 [2024-09-12 21:46:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:46:23,859 INFO L225 Difference]: With dead ends: 165 [2024-09-12 21:46:23,859 INFO L226 Difference]: Without dead ends: 99 [2024-09-12 21:46:23,861 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 69 SyntacticMatches, 19 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=643, Invalid=7189, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:46:23,861 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 23 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:46:23,862 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 477 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1914 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2024-09-12 21:46:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-12 21:46:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-09-12 21:46:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 21:46:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2024-09-12 21:46:23,880 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 86 [2024-09-12 21:46:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:46:23,880 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2024-09-12 21:46:23,881 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 49 states have internal predecessors, (77), 20 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:46:23,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:46:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2024-09-12 21:46:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-09-12 21:46:23,882 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:46:23,882 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:46:23,900 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-12 21:46:24,082 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:46:24,083 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:46:24,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:46:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1437286660, now seen corresponding path program 16 times [2024-09-12 21:46:24,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:46:24,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571966099] [2024-09-12 21:46:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:46:24,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:46:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:46:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-12 21:46:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:46:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:46:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:46:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:46:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:46:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:46:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:46:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:46:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:46:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:46:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 20 proven. 221 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:46:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:46:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571966099] [2024-09-12 21:46:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571966099] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:46:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454324988] [2024-09-12 21:46:24,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:46:24,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:46:24,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:46:24,678 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) [2024-09-12 21:46:24,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-12 21:46:24,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:46:24,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:46:24,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-12 21:46:24,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:46:25,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:46:27,660 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:46:27,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:46:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 145 proven. 96 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-12 21:46:27,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:46:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454324988] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:46:27,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:46:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 55 [2024-09-12 21:46:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233875504] [2024-09-12 21:46:27,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:46:27,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-12 21:46:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:46:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-12 21:46:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2862, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 21:46:27,894 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 22 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:46:32,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:36,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:40,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:44,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:49,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:53,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:46:57,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:01,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:05,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:47:05,943 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2024-09-12 21:47:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:47:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 22 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 94 [2024-09-12 21:47:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:47:05,945 INFO L225 Difference]: With dead ends: 180 [2024-09-12 21:47:05,945 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 21:47:05,947 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 75 SyntacticMatches, 21 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=726, Invalid=8394, Unknown=0, NotChecked=0, Total=9120 [2024-09-12 21:47:05,948 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 31 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:47:05,948 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 378 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1542 Invalid, 9 Unknown, 0 Unchecked, 36.9s Time] [2024-09-12 21:47:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 21:47:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-09-12 21:47:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 21:47:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-09-12 21:47:05,976 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 94 [2024-09-12 21:47:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:47:05,976 INFO L474 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-09-12 21:47:05,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 53 states have internal predecessors, (83), 22 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:47:05,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-09-12 21:47:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-12 21:47:05,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:47:05,977 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:47:05,991 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-12 21:47:06,178 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:06,178 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:47:06,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1240172010, now seen corresponding path program 17 times [2024-09-12 21:47:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:47:06,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362900431] [2024-09-12 21:47:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:47:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:47:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:47:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:47:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:47:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:47:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:47:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:47:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:47:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:47:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:47:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:47:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:47:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:47:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 22 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:47:06,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:47:06,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362900431] [2024-09-12 21:47:06,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362900431] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:06,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124705620] [2024-09-12 21:47:06,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:47:06,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:47:06,883 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) [2024-09-12 21:47:06,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-12 21:47:07,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-12 21:47:07,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:47:07,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-12 21:47:07,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:47:07,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:47:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:47:09,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:47:09,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:47:09,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:47:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 22 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 21:47:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124705620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:47:09,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:47:09,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 30] total 59 [2024-09-12 21:47:09,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427415449] [2024-09-12 21:47:09,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:47:09,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:47:09,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:47:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:47:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3240, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:47:09,273 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 57 states have internal predecessors, (92), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:47:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:47:10,223 INFO L93 Difference]: Finished difference Result 116 states and 117 transitions. [2024-09-12 21:47:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-12 21:47:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 57 states have internal predecessors, (92), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 102 [2024-09-12 21:47:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:47:10,225 INFO L225 Difference]: With dead ends: 116 [2024-09-12 21:47:10,225 INFO L226 Difference]: Without dead ends: 114 [2024-09-12 21:47:10,228 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 178 SyntacticMatches, 23 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=210, Invalid=3696, Unknown=0, NotChecked=0, Total=3906 [2024-09-12 21:47:10,230 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:47:10,230 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 648 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-12 21:47:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-09-12 21:47:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2024-09-12 21:47:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:47:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-12 21:47:10,263 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 102 [2024-09-12 21:47:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:47:10,264 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-12 21:47:10,264 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 57 states have internal predecessors, (92), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:47:10,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-12 21:47:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-12 21:47:10,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:47:10,265 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:47:10,283 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-12 21:47:10,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:10,470 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:47:10,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1925454366, now seen corresponding path program 18 times [2024-09-12 21:47:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:47:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084918491] [2024-09-12 21:47:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:47:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:47:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:47:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-12 21:47:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:47:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:47:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:47:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:47:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:47:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:47:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:47:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:47:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:47:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:47:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:47:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:47:10,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084918491] [2024-09-12 21:47:10,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084918491] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:10,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570496679] [2024-09-12 21:47:10,955 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:47:10,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:10,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:47:10,957 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) [2024-09-12 21:47:10,958 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-12 21:47:11,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-12 21:47:11,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:47:11,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-12 21:47:11,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:47:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:11,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:47:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570496679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:47:11,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:47:11,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-09-12 21:47:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784871901] [2024-09-12 21:47:11,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:47:11,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 21:47:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:47:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 21:47:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:47:11,881 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:47:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:47:12,032 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2024-09-12 21:47:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 21:47:12,032 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 109 [2024-09-12 21:47:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:47:12,033 INFO L225 Difference]: With dead ends: 160 [2024-09-12 21:47:12,033 INFO L226 Difference]: Without dead ends: 113 [2024-09-12 21:47:12,034 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 205 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 21:47:12,034 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:47:12,034 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:47:12,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-12 21:47:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-09-12 21:47:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-12 21:47:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2024-09-12 21:47:12,063 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2024-09-12 21:47:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:47:12,063 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2024-09-12 21:47:12,064 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:47:12,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2024-09-12 21:47:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-12 21:47:12,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:47:12,065 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:47:12,078 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-12 21:47:12,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-12 21:47:12,265 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:47:12,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash -54937284, now seen corresponding path program 19 times [2024-09-12 21:47:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:47:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603067378] [2024-09-12 21:47:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:47:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:47:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:47:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:47:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:47:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:47:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:47:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:47:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:47:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:47:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:47:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:47:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:47:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:47:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:47:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 24 proven. 313 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:13,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:47:13,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603067378] [2024-09-12 21:47:13,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603067378] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874241738] [2024-09-12 21:47:13,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:47:13,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:13,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:47:13,203 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) [2024-09-12 21:47:13,204 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-12 21:47:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:13,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-12 21:47:13,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:47:13,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:47:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:14,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:47:14,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:47:14,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:47:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 24 proven. 313 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-12 21:47:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874241738] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:47:14,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:47:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 32] total 62 [2024-09-12 21:47:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434287474] [2024-09-12 21:47:14,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:47:14,928 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-12 21:47:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:47:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-12 21:47:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3592, Unknown=0, NotChecked=0, Total=3782 [2024-09-12 21:47:14,929 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 62 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 60 states have internal predecessors, (95), 26 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 25 states have call predecessors, (37), 25 states have call successors, (37) [2024-09-12 21:47:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:47:16,004 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2024-09-12 21:47:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-12 21:47:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 60 states have internal predecessors, (95), 26 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 25 states have call predecessors, (37), 25 states have call successors, (37) Word has length 110 [2024-09-12 21:47:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:47:16,006 INFO L225 Difference]: With dead ends: 124 [2024-09-12 21:47:16,006 INFO L226 Difference]: Without dead ends: 122 [2024-09-12 21:47:16,007 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 193 SyntacticMatches, 25 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=218, Invalid=4072, Unknown=0, NotChecked=0, Total=4290 [2024-09-12 21:47:16,007 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-12 21:47:16,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 714 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-12 21:47:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-12 21:47:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2024-09-12 21:47:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:47:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-12 21:47:16,043 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 110 [2024-09-12 21:47:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:47:16,043 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-12 21:47:16,043 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 60 states have internal predecessors, (95), 26 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 25 states have call predecessors, (37), 25 states have call successors, (37) [2024-09-12 21:47:16,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-12 21:47:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-12 21:47:16,044 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:47:16,044 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:47:16,056 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-12 21:47:16,244 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-12 21:47:16,244 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:47:16,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1102649716, now seen corresponding path program 20 times [2024-09-12 21:47:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:47:16,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229803220] [2024-09-12 21:47:16,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:47:16,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:47:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:47:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 21:47:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:47:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:47:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:47:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:47:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:47:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:47:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:47:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:47:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:47:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:47:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:47:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:47:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:47:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:47:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229803220] [2024-09-12 21:47:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229803220] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488278721] [2024-09-12 21:47:16,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:47:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:16,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:47:16,797 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) [2024-09-12 21:47:16,800 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-12 21:47:16,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:47:16,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:47:16,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-12 21:47:16,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:47:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:47:17,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:47:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:47:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488278721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:47:17,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:47:17,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-09-12 21:47:17,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897712617] [2024-09-12 21:47:17,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:47:17,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-12 21:47:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:47:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-12 21:47:17,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:47:17,609 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:47:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:47:17,763 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2024-09-12 21:47:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-12 21:47:17,763 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 117 [2024-09-12 21:47:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:47:17,764 INFO L225 Difference]: With dead ends: 171 [2024-09-12 21:47:17,764 INFO L226 Difference]: Without dead ends: 121 [2024-09-12 21:47:17,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 220 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-12 21:47:17,765 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:47:17,765 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 21:47:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-09-12 21:47:17,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-09-12 21:47:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-12 21:47:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2024-09-12 21:47:17,800 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2024-09-12 21:47:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:47:17,800 INFO L474 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2024-09-12 21:47:17,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 47 states have internal predecessors, (84), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-12 21:47:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2024-09-12 21:47:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-12 21:47:17,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:47:17,801 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:47:17,817 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-12 21:47:18,005 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:18,006 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:47:18,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:47:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1681033130, now seen corresponding path program 21 times [2024-09-12 21:47:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:47:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604249302] [2024-09-12 21:47:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:47:18,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:47:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:47:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 21:47:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:47:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:47:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:47:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:47:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:47:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:47:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:47:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:47:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:47:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:47:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:47:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:47:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:47:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 26 proven. 365 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:47:18,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:47:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604249302] [2024-09-12 21:47:18,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604249302] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:18,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686647960] [2024-09-12 21:47:18,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:47:18,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:47:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:47:18,907 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) [2024-09-12 21:47:18,909 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-12 21:47:19,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-12 21:47:19,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:47:19,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:47:19,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:47:20,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:47:23,389 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:47:23,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:47:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 247 proven. 144 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-12 21:47:23,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:47:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686647960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:47:23,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:47:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36] total 67 [2024-09-12 21:47:23,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736353406] [2024-09-12 21:47:23,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:47:23,671 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-12 21:47:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:47:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-12 21:47:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=4218, Unknown=0, NotChecked=0, Total=4692 [2024-09-12 21:47:23,672 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 28 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 21:47:28,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:32,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:36,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:40,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:44,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:49,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:53,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:47:57,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:01,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:05,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:09,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:13,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:17,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:18,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:48:18,172 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2024-09-12 21:48:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 21:48:18,172 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 28 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 118 [2024-09-12 21:48:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:48:18,174 INFO L225 Difference]: With dead ends: 229 [2024-09-12 21:48:18,174 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 21:48:18,175 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 93 SyntacticMatches, 27 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1012, Invalid=12794, Unknown=0, NotChecked=0, Total=13806 [2024-09-12 21:48:18,176 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 36 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:48:18,176 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 378 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2108 Invalid, 13 Unknown, 0 Unchecked, 53.0s Time] [2024-09-12 21:48:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 21:48:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-09-12 21:48:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 21:48:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2024-09-12 21:48:18,204 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 118 [2024-09-12 21:48:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:48:18,205 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2024-09-12 21:48:18,205 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 28 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 21:48:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:48:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2024-09-12 21:48:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-09-12 21:48:18,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:48:18,206 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:48:18,222 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-12 21:48:18,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-12 21:48:18,406 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:48:18,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:48:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1231766396, now seen corresponding path program 22 times [2024-09-12 21:48:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:48:18,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259339899] [2024-09-12 21:48:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:48:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:48:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:48:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-12 21:48:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:48:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:48:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:48:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:48:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:48:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:48:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:48:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:48:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:48:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:48:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:48:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:48:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:48:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:48:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 28 proven. 421 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:48:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:48:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259339899] [2024-09-12 21:48:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259339899] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:48:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691752992] [2024-09-12 21:48:19,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:48:19,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:48:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:48:19,276 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) [2024-09-12 21:48:19,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-12 21:48:19,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:48:19,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:48:19,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-12 21:48:19,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:48:20,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:48:24,107 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:48:24,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:48:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 287 proven. 162 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-12 21:48:24,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:48:24,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691752992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:48:24,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:48:24,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 38] total 71 [2024-09-12 21:48:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46310870] [2024-09-12 21:48:24,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:48:24,393 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:48:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:48:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:48:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=4728, Unknown=0, NotChecked=0, Total=5256 [2024-09-12 21:48:24,395 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 21:48:29,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:33,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:37,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:41,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:45,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:50,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:54,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:48:58,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:02,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:06,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:10,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:14,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:18,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:49:19,376 INFO L93 Difference]: Finished difference Result 240 states and 244 transitions. [2024-09-12 21:49:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-12 21:49:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 126 [2024-09-12 21:49:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:49:19,378 INFO L225 Difference]: With dead ends: 240 [2024-09-12 21:49:19,378 INFO L226 Difference]: Without dead ends: 139 [2024-09-12 21:49:19,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 99 SyntacticMatches, 29 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3203 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1108, Invalid=14144, Unknown=0, NotChecked=0, Total=15252 [2024-09-12 21:49:19,380 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 79 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 42 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 2593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:49:19,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 379 Invalid, 2593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2538 Invalid, 13 Unknown, 0 Unchecked, 53.3s Time] [2024-09-12 21:49:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-12 21:49:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-09-12 21:49:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-12 21:49:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2024-09-12 21:49:19,421 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 126 [2024-09-12 21:49:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:49:19,422 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2024-09-12 21:49:19,422 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.5285714285714285) internal successors, (107), 69 states have internal predecessors, (107), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 21:49:19,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2024-09-12 21:49:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-12 21:49:19,423 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:49:19,423 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:49:19,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-12 21:49:19,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-12 21:49:19,624 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:49:19,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 191035754, now seen corresponding path program 23 times [2024-09-12 21:49:19,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:49:19,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420006066] [2024-09-12 21:49:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:49:19,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:49:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:49:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:49:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:49:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:49:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:49:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:49:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:49:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:49:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:49:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:49:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:49:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:49:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:49:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:49:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:49:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:49:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:49:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:49:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420006066] [2024-09-12 21:49:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420006066] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368338732] [2024-09-12 21:49:20,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:49:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:49:20,523 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) [2024-09-12 21:49:20,524 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-12 21:49:20,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-12 21:49:20,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:49:20,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-12 21:49:20,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:49:21,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:49:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:49:23,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:49:23,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:49:23,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:49:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 30 proven. 481 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-12 21:49:23,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368338732] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:49:23,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:49:23,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 38] total 75 [2024-09-12 21:49:23,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613655556] [2024-09-12 21:49:23,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:49:23,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-09-12 21:49:23,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:49:23,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-09-12 21:49:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=5316, Unknown=0, NotChecked=0, Total=5550 [2024-09-12 21:49:23,990 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 75 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 73 states have internal predecessors, (116), 33 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:49:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:49:25,499 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2024-09-12 21:49:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-12 21:49:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 73 states have internal predecessors, (116), 33 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 134 [2024-09-12 21:49:25,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:49:25,501 INFO L225 Difference]: With dead ends: 148 [2024-09-12 21:49:25,501 INFO L226 Difference]: Without dead ends: 146 [2024-09-12 21:49:25,501 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 234 SyntacticMatches, 31 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=262, Invalid=5900, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:49:25,502 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 4202 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-09-12 21:49:25,502 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1056 Invalid, 4212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 4202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-09-12 21:49:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-12 21:49:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-09-12 21:49:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:49:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-12 21:49:25,538 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 134 [2024-09-12 21:49:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:49:25,538 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-12 21:49:25,538 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.5675675675675675) internal successors, (116), 73 states have internal predecessors, (116), 33 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 21:49:25,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-12 21:49:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-12 21:49:25,539 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:49:25,539 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:49:25,555 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-12 21:49:25,740 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-12 21:49:25,740 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:49:25,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2060732770, now seen corresponding path program 24 times [2024-09-12 21:49:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:49:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473311284] [2024-09-12 21:49:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:49:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:49:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:49:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 21:49:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:49:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:49:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:49:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:49:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:49:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:49:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:49:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:49:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:49:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:49:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:49:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:49:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:49:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:49:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:49:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:49:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473311284] [2024-09-12 21:49:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473311284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271707757] [2024-09-12 21:49:26,399 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:49:26,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:49:26,401 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) [2024-09-12 21:49:26,401 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-12 21:49:26,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-12 21:49:26,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:49:26,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 21:49:26,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:49:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:27,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:49:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271707757] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:49:27,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:49:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-09-12 21:49:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33207409] [2024-09-12 21:49:27,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:49:27,718 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-12 21:49:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:49:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-12 21:49:27,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:49:27,719 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:49:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:49:27,992 INFO L93 Difference]: Finished difference Result 204 states and 222 transitions. [2024-09-12 21:49:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-12 21:49:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 141 [2024-09-12 21:49:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:49:27,994 INFO L225 Difference]: With dead ends: 204 [2024-09-12 21:49:27,994 INFO L226 Difference]: Without dead ends: 145 [2024-09-12 21:49:27,994 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 265 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-12 21:49:27,994 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:49:27,995 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:49:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-12 21:49:28,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-09-12 21:49:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 21:49:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2024-09-12 21:49:28,046 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2024-09-12 21:49:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:49:28,046 INFO L474 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2024-09-12 21:49:28,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:49:28,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2024-09-12 21:49:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-12 21:49:28,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:49:28,047 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:49:28,066 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-12 21:49:28,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-12 21:49:28,248 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:49:28,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1204986436, now seen corresponding path program 25 times [2024-09-12 21:49:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:49:28,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835016581] [2024-09-12 21:49:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:49:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:49:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:49:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:49:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:49:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:49:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:49:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:49:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:49:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:49:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:49:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:49:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:49:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:49:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:49:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:49:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:49:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:49:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:49:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 32 proven. 545 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:49:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835016581] [2024-09-12 21:49:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835016581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579564899] [2024-09-12 21:49:29,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:49:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:49:29,287 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) [2024-09-12 21:49:29,291 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-12 21:49:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:29,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-12 21:49:29,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:49:29,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:49:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 577 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:32,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:49:32,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:49:32,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:49:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 32 proven. 545 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 21:49:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579564899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:49:32,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:49:32,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 40] total 79 [2024-09-12 21:49:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984724243] [2024-09-12 21:49:32,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:49:32,935 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-12 21:49:32,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:49:32,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-12 21:49:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=5915, Unknown=0, NotChecked=0, Total=6162 [2024-09-12 21:49:32,937 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 79 states, 78 states have (on average 1.564102564102564) internal successors, (122), 77 states have internal predecessors, (122), 35 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:49:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:49:34,641 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2024-09-12 21:49:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-12 21:49:34,642 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.564102564102564) internal successors, (122), 77 states have internal predecessors, (122), 35 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 142 [2024-09-12 21:49:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:49:34,643 INFO L225 Difference]: With dead ends: 156 [2024-09-12 21:49:34,643 INFO L226 Difference]: Without dead ends: 154 [2024-09-12 21:49:34,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 248 SyntacticMatches, 33 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=275, Invalid=6531, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:49:34,643 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 4654 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-09-12 21:49:34,643 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1083 Invalid, 4666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4654 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-09-12 21:49:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-09-12 21:49:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2024-09-12 21:49:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:49:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-12 21:49:34,686 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 142 [2024-09-12 21:49:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:49:34,686 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-12 21:49:34,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.564102564102564) internal successors, (122), 77 states have internal predecessors, (122), 35 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-12 21:49:34,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-12 21:49:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-12 21:49:34,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:49:34,687 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:49:34,705 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-12 21:49:34,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:34,888 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:49:34,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash -53923316, now seen corresponding path program 26 times [2024-09-12 21:49:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:49:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329579773] [2024-09-12 21:49:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:49:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:49:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:49:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 21:49:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:49:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:49:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:49:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:49:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:49:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:49:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:49:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:49:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:49:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:49:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:49:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:49:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:49:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:49:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:49:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:49:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:49:35,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:49:35,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329579773] [2024-09-12 21:49:35,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329579773] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:35,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916985540] [2024-09-12 21:49:35,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:49:35,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:35,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:49:35,591 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) [2024-09-12 21:49:35,592 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-12 21:49:35,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:49:35,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:49:35,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-12 21:49:35,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:49:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:49:36,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:49:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:49:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916985540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:49:36,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:49:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-09-12 21:49:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655690032] [2024-09-12 21:49:36,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:49:36,774 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-12 21:49:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:49:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-12 21:49:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:49:36,775 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:49:37,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:49:37,112 INFO L93 Difference]: Finished difference Result 215 states and 234 transitions. [2024-09-12 21:49:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 21:49:37,113 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 149 [2024-09-12 21:49:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:49:37,115 INFO L225 Difference]: With dead ends: 215 [2024-09-12 21:49:37,115 INFO L226 Difference]: Without dead ends: 153 [2024-09-12 21:49:37,115 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 280 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-12 21:49:37,116 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:49:37,116 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 336 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:49:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-09-12 21:49:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-09-12 21:49:37,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 114 states have internal predecessors, (115), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-12 21:49:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-09-12 21:49:37,173 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2024-09-12 21:49:37,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:49:37,174 INFO L474 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-09-12 21:49:37,174 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 59 states have internal predecessors, (104), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-12 21:49:37,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:37,174 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-09-12 21:49:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-09-12 21:49:37,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:49:37,176 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:49:37,194 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-12 21:49:37,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-12 21:49:37,376 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:49:37,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:49:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1556554966, now seen corresponding path program 27 times [2024-09-12 21:49:37,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:49:37,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330898399] [2024-09-12 21:49:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:49:37,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:49:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:49:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-12 21:49:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:49:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:49:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:49:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:49:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:49:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:49:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:49:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:49:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:49:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:49:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:49:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:49:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:49:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:49:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:49:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:49:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:49:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 34 proven. 613 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:49:38,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:49:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330898399] [2024-09-12 21:49:38,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330898399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540318495] [2024-09-12 21:49:38,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:49:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:49:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:49:38,454 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) [2024-09-12 21:49:38,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-12 21:49:40,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-12 21:49:40,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:49:40,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:49:40,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:49:40,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:49:45,839 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:49:45,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:49:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 425 proven. 222 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-12 21:49:45,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:49:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540318495] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:49:46,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:49:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 44] total 83 [2024-09-12 21:49:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067201597] [2024-09-12 21:49:46,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:49:46,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:49:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:49:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:49:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=6432, Unknown=0, NotChecked=0, Total=7140 [2024-09-12 21:49:46,167 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 36 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 21:49:51,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:55,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:49:59,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:03,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:08,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:12,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:16,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:20,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:24,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:28,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:33,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:37,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:41,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:45,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:49,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:53,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:58,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:50:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:50:58,505 INFO L93 Difference]: Finished difference Result 285 states and 289 transitions. [2024-09-12 21:50:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-12 21:50:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 36 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 150 [2024-09-12 21:50:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:50:58,507 INFO L225 Difference]: With dead ends: 285 [2024-09-12 21:50:58,507 INFO L226 Difference]: Without dead ends: 163 [2024-09-12 21:50:58,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 118 SyntacticMatches, 35 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4412 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1447, Invalid=19433, Unknown=0, NotChecked=0, Total=20880 [2024-09-12 21:50:58,508 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 56 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 4673 mSolverCounterSat, 31 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 4721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4673 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:50:58,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 559 Invalid, 4721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4673 Invalid, 17 Unknown, 0 Unchecked, 70.1s Time] [2024-09-12 21:50:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-12 21:50:58,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2024-09-12 21:50:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 120 states have internal predecessors, (121), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-12 21:50:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2024-09-12 21:50:58,574 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 150 [2024-09-12 21:50:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:50:58,574 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2024-09-12 21:50:58,574 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 36 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-12 21:50:58,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:50:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2024-09-12 21:50:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-09-12 21:50:58,577 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:50:58,577 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:50:58,598 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-12 21:50:58,777 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:50:58,777 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:50:58,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:50:58,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1983641604, now seen corresponding path program 28 times [2024-09-12 21:50:58,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:50:58,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733380265] [2024-09-12 21:50:58,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:50:58,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:50:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:50:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-12 21:50:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:50:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:50:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:50:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:50:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:50:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:50:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:50:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:50:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:50:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:50:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:50:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:50:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:50:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:50:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:50:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:50:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:50:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:50:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 36 proven. 685 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:50:59,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:50:59,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733380265] [2024-09-12 21:50:59,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733380265] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:50:59,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348989556] [2024-09-12 21:50:59,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:50:59,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:50:59,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:50:59,987 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) [2024-09-12 21:50:59,988 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-12 21:51:00,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:51:00,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:51:00,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-12 21:51:00,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:51:01,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:51:07,150 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:51:07,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:51:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 477 proven. 244 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 21:51:07,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:51:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348989556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:51:07,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:51:07,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 46] total 87 [2024-09-12 21:51:07,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170464106] [2024-09-12 21:51:07,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:51:07,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-09-12 21:51:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:51:07,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-09-12 21:51:07,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=7058, Unknown=0, NotChecked=0, Total=7832 [2024-09-12 21:51:07,500 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 38 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:51:12,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:17,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:21,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:25,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:29,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:33,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:38,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:42,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:46,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:50,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:54,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:51:59,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:07,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:11,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:15,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:20,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:52:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:52:20,686 INFO L93 Difference]: Finished difference Result 300 states and 304 transitions. [2024-09-12 21:52:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-12 21:52:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 38 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 158 [2024-09-12 21:52:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:52:20,688 INFO L225 Difference]: With dead ends: 300 [2024-09-12 21:52:20,688 INFO L226 Difference]: Without dead ends: 171 [2024-09-12 21:52:20,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 123 SyntacticMatches, 37 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4863 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1570, Invalid=21382, Unknown=0, NotChecked=0, Total=22952 [2024-09-12 21:52:20,689 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 49 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 6635 mSolverCounterSat, 27 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 6679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6635 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.7s IncrementalHoareTripleChecker+Time [2024-09-12 21:52:20,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1501 Invalid, 6679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 6635 Invalid, 17 Unknown, 0 Unchecked, 70.7s Time] [2024-09-12 21:52:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-12 21:52:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-09-12 21:52:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-12 21:52:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2024-09-12 21:52:20,753 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 158 [2024-09-12 21:52:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:52:20,754 INFO L474 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2024-09-12 21:52:20,754 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.5232558139534884) internal successors, (131), 85 states have internal predecessors, (131), 38 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-12 21:52:20,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2024-09-12 21:52:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-09-12 21:52:20,754 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:52:20,755 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:52:20,773 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-12 21:52:20,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:20,955 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:52:20,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1450192106, now seen corresponding path program 29 times [2024-09-12 21:52:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:52:20,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985469892] [2024-09-12 21:52:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:52:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:52:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:52:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:52:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:52:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:52:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:52:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:52:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:52:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:52:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:52:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:52:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:52:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:52:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:52:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:52:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:52:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:52:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:52:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:52:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:52:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:52:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:52:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:52:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985469892] [2024-09-12 21:52:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985469892] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:52:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254476561] [2024-09-12 21:52:22,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:52:22,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:22,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:52:22,243 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) [2024-09-12 21:52:22,244 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-12 21:52:22,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-09-12 21:52:22,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:52:22,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-09-12 21:52:22,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:52:23,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:52:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 0 proven. 799 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:52:27,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:52:27,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:52:27,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:52:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 38 proven. 761 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-12 21:52:27,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254476561] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:52:27,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:52:27,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47, 46] total 91 [2024-09-12 21:52:27,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271129463] [2024-09-12 21:52:27,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:52:27,349 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-12 21:52:27,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:52:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-12 21:52:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=7904, Unknown=0, NotChecked=0, Total=8190 [2024-09-12 21:52:27,351 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 89 states have internal predecessors, (140), 41 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:52:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:52:29,622 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2024-09-12 21:52:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-12 21:52:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 89 states have internal predecessors, (140), 41 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 166 [2024-09-12 21:52:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:52:29,624 INFO L225 Difference]: With dead ends: 180 [2024-09-12 21:52:29,625 INFO L226 Difference]: Without dead ends: 178 [2024-09-12 21:52:29,625 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 290 SyntacticMatches, 39 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=314, Invalid=8616, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 21:52:29,626 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 6438 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 6443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:52:29,626 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1376 Invalid, 6443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6438 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-12 21:52:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-12 21:52:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2024-09-12 21:52:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:52:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-12 21:52:29,685 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 166 [2024-09-12 21:52:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:52:29,686 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-12 21:52:29,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 89 states have internal predecessors, (140), 41 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-12 21:52:29,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-12 21:52:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-12 21:52:29,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:52:29,687 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:52:29,705 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-12 21:52:29,888 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-12 21:52:29,888 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:52:29,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -301624546, now seen corresponding path program 30 times [2024-09-12 21:52:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:52:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100871172] [2024-09-12 21:52:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:52:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:52:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:52:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 21:52:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-12 21:52:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-12 21:52:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-12 21:52:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-12 21:52:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 21:52:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-12 21:52:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-12 21:52:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 21:52:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 21:52:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-12 21:52:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 21:52:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-12 21:52:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-12 21:52:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-12 21:52:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-12 21:52:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-12 21:52:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-12 21:52:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-12 21:52:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-12 21:52:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:52:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100871172] [2024-09-12 21:52:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100871172] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:52:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787479835] [2024-09-12 21:52:30,759 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:52:30,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:52:30,761 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:52:30,762 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-12 21:52:31,849 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-09-12 21:52:31,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:52:31,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 21:52:31,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:52:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:32,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:52:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787479835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:52:33,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:52:33,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-09-12 21:52:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792880774] [2024-09-12 21:52:33,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:52:33,225 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-12 21:52:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:52:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-12 21:52:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:52:33,226 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:52:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:52:33,566 INFO L93 Difference]: Finished difference Result 248 states and 270 transitions. [2024-09-12 21:52:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-12 21:52:33,567 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 173 [2024-09-12 21:52:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:52:33,568 INFO L225 Difference]: With dead ends: 248 [2024-09-12 21:52:33,568 INFO L226 Difference]: Without dead ends: 177 [2024-09-12 21:52:33,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 325 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 21:52:33,569 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:52:33,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 527 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:52:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-09-12 21:52:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-09-12 21:52:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 131 states have (on average 1.015267175572519) internal successors, (133), 132 states have internal predecessors, (133), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-12 21:52:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2024-09-12 21:52:33,633 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2024-09-12 21:52:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:52:33,633 INFO L474 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2024-09-12 21:52:33,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.75) internal successors, (119), 68 states have internal predecessors, (119), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:52:33,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2024-09-12 21:52:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-12 21:52:33,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:52:33,634 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:52:33,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-12 21:52:33,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:33,835 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:52:33,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:33,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1475559996, now seen corresponding path program 31 times [2024-09-12 21:52:33,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:52:33,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407272759] [2024-09-12 21:52:33,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:52:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:52:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:52:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:52:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:52:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:52:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:52:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:52:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:52:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:52:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:52:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:52:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:52:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:52:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:52:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:52:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:52:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:52:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:52:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:52:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:52:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 21:52:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:52:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:35,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:52:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407272759] [2024-09-12 21:52:35,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407272759] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:52:35,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238967955] [2024-09-12 21:52:35,230 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:52:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:52:35,231 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:52:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-12 21:52:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:35,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-09-12 21:52:35,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:52:36,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:52:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 0 proven. 881 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:40,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:52:40,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:52:40,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:52:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 40 proven. 841 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-12 21:52:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238967955] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:52:40,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:52:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49, 48] total 95 [2024-09-12 21:52:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471844531] [2024-09-12 21:52:40,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:52:40,569 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-12 21:52:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:52:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-12 21:52:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=8631, Unknown=0, NotChecked=0, Total=8930 [2024-09-12 21:52:40,571 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 95 states, 94 states have (on average 1.553191489361702) internal successors, (146), 93 states have internal predecessors, (146), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:52:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:52:42,929 INFO L93 Difference]: Finished difference Result 188 states and 189 transitions. [2024-09-12 21:52:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-12 21:52:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.553191489361702) internal successors, (146), 93 states have internal predecessors, (146), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 174 [2024-09-12 21:52:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:52:42,931 INFO L225 Difference]: With dead ends: 188 [2024-09-12 21:52:42,931 INFO L226 Difference]: Without dead ends: 186 [2024-09-12 21:52:42,932 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 304 SyntacticMatches, 41 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=327, Invalid=9375, Unknown=0, NotChecked=0, Total=9702 [2024-09-12 21:52:42,932 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 6504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 6509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:52:42,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1397 Invalid, 6509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6504 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-09-12 21:52:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-09-12 21:52:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2024-09-12 21:52:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 21:52:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-12 21:52:43,000 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 174 [2024-09-12 21:52:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:52:43,000 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-12 21:52:43,000 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.553191489361702) internal successors, (146), 93 states have internal predecessors, (146), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-12 21:52:43,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-12 21:52:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-12 21:52:43,001 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:52:43,001 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:52:43,014 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-12 21:52:43,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-12 21:52:43,202 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:52:43,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2114896500, now seen corresponding path program 32 times [2024-09-12 21:52:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:52:43,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615763080] [2024-09-12 21:52:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:52:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:52:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:52:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-12 21:52:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 21:52:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 21:52:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 21:52:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-12 21:52:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 21:52:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-12 21:52:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-12 21:52:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-12 21:52:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 21:52:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 21:52:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-12 21:52:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-12 21:52:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-12 21:52:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-12 21:52:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-12 21:52:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-12 21:52:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-12 21:52:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-12 21:52:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-12 21:52:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-12 21:52:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:52:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:52:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615763080] [2024-09-12 21:52:44,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615763080] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:52:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930440413] [2024-09-12 21:52:44,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:52:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:52:44,106 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:52:44,108 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-12 21:52:44,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:52:44,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:52:44,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-12 21:52:44,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:52:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:52:45,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:52:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:52:45,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930440413] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:52:45,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:52:45,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-09-12 21:52:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502751939] [2024-09-12 21:52:45,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:52:45,764 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-12 21:52:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:52:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-12 21:52:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:52:45,765 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 21:52:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:52:46,079 INFO L93 Difference]: Finished difference Result 259 states and 282 transitions. [2024-09-12 21:52:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-12 21:52:46,079 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 181 [2024-09-12 21:52:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:52:46,081 INFO L225 Difference]: With dead ends: 259 [2024-09-12 21:52:46,081 INFO L226 Difference]: Without dead ends: 185 [2024-09-12 21:52:46,081 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 340 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-12 21:52:46,081 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:52:46,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:52:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-12 21:52:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-09-12 21:52:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-12 21:52:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2024-09-12 21:52:46,156 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 181 [2024-09-12 21:52:46,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:52:46,157 INFO L474 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2024-09-12 21:52:46,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 71 states have internal predecessors, (124), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-12 21:52:46,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2024-09-12 21:52:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-09-12 21:52:46,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:52:46,158 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:52:46,170 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-12 21:52:46,358 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-12 21:52:46,358 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:52:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:52:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -691736918, now seen corresponding path program 33 times [2024-09-12 21:52:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:52:46,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562223566] [2024-09-12 21:52:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:52:46,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:52:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:52:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 21:52:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 21:52:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-12 21:52:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-12 21:52:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 21:52:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-12 21:52:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 21:52:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 21:52:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-12 21:52:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 21:52:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-12 21:52:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-12 21:52:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-12 21:52:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-12 21:52:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-12 21:52:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-12 21:52:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-12 21:52:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-12 21:52:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-12 21:52:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-12 21:52:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-12 21:52:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:52:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 42 proven. 925 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:52:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:52:47,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562223566] [2024-09-12 21:52:47,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562223566] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:52:47,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292731943] [2024-09-12 21:52:47,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:52:47,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:52:47,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:52:47,800 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:52:47,801 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-12 21:52:51,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-12 21:52:51,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:52:51,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 21:52:51,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:52:52,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:53:00,396 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:53:00,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:53:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 651 proven. 316 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-12 21:53:00,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:53:00,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292731943] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:53:00,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:53:00,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 52] total 99 [2024-09-12 21:53:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558303119] [2024-09-12 21:53:00,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:53:00,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-09-12 21:53:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:53:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-09-12 21:53:00,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=9110, Unknown=0, NotChecked=0, Total=10100 [2024-09-12 21:53:00,784 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 44 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:53:06,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:10,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:14,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:18,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:23,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:27,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:31,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:35,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:39,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:43,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:47,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:52,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:53:56,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:00,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:04,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:08,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:12,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:17,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:21,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:25,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:29,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:54:30,005 INFO L93 Difference]: Finished difference Result 349 states and 353 transitions. [2024-09-12 21:54:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-09-12 21:54:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 44 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 182 [2024-09-12 21:54:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:54:30,007 INFO L225 Difference]: With dead ends: 349 [2024-09-12 21:54:30,007 INFO L226 Difference]: Without dead ends: 195 [2024-09-12 21:54:30,009 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 141 SyntacticMatches, 43 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6469 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1976, Invalid=28126, Unknown=0, NotChecked=0, Total=30102 [2024-09-12 21:54:30,010 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 109 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 4747 mSolverCounterSat, 54 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 4747 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.1s IncrementalHoareTripleChecker+Time [2024-09-12 21:54:30,010 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 564 Invalid, 4822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 4747 Invalid, 21 Unknown, 0 Unchecked, 86.1s Time] [2024-09-12 21:54:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-12 21:54:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2024-09-12 21:54:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 21:54:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2024-09-12 21:54:30,083 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 182 [2024-09-12 21:54:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:54:30,083 INFO L474 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2024-09-12 21:54:30,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.5204081632653061) internal successors, (149), 97 states have internal predecessors, (149), 44 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-12 21:54:30,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:54:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2024-09-12 21:54:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-09-12 21:54:30,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:54:30,085 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:54:30,101 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-12 21:54:30,285 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-12 21:54:30,285 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:54:30,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:54:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1434389628, now seen corresponding path program 34 times [2024-09-12 21:54:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:54:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970449054] [2024-09-12 21:54:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:54:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:54:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:54:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-12 21:54:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 21:54:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 21:54:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 21:54:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-12 21:54:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-12 21:54:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-12 21:54:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 21:54:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-12 21:54:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-12 21:54:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-12 21:54:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-12 21:54:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-12 21:54:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-12 21:54:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-12 21:54:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-12 21:54:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-12 21:54:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-12 21:54:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-12 21:54:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-12 21:54:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-12 21:54:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-12 21:54:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:54:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 44 proven. 1013 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:54:31,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:54:31,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970449054] [2024-09-12 21:54:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970449054] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:54:31,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407509998] [2024-09-12 21:54:31,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 21:54:31,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:54:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:54:31,834 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:54:31,835 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-12 21:54:35,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 21:54:35,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:54:35,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 21:54:35,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:54:36,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:54:44,304 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:54:44,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:54:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 715 proven. 342 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-12 21:54:44,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:54:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407509998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:54:44,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:54:44,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 54] total 103 [2024-09-12 21:54:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527596258] [2024-09-12 21:54:44,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:54:44,700 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-12 21:54:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:54:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-12 21:54:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1068, Invalid=9852, Unknown=0, NotChecked=0, Total=10920 [2024-09-12 21:54:44,702 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 46 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 21:54:50,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:54,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:54:56,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:00,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:04,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:08,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:12,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:16,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:21,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:25,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:29,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:33,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:37,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:41,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:46,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:50,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:54,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:55:58,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:56:02,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:56:07,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:56:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:56:07,648 INFO L93 Difference]: Finished difference Result 352 states and 358 transitions. [2024-09-12 21:56:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-12 21:56:07,649 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 46 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 190 [2024-09-12 21:56:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:56:07,650 INFO L225 Difference]: With dead ends: 352 [2024-09-12 21:56:07,650 INFO L226 Difference]: Without dead ends: 203 [2024-09-12 21:56:07,651 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 147 SyntacticMatches, 45 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6912 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=2112, Invalid=30108, Unknown=0, NotChecked=0, Total=32220 [2024-09-12 21:56:07,652 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 105 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 5229 mSolverCounterSat, 58 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 5306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 5229 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.6s IncrementalHoareTripleChecker+Time [2024-09-12 21:56:07,652 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 599 Invalid, 5306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 5229 Invalid, 19 Unknown, 0 Unchecked, 79.6s Time] [2024-09-12 21:56:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-12 21:56:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2024-09-12 21:56:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.0134228187919463) internal successors, (151), 150 states have internal predecessors, (151), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-12 21:56:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2024-09-12 21:56:07,719 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 190 [2024-09-12 21:56:07,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:56:07,720 INFO L474 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2024-09-12 21:56:07,720 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 101 states have internal predecessors, (155), 46 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-12 21:56:07,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2024-09-12 21:56:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-09-12 21:56:07,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:56:07,721 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:56:07,744 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-12 21:56:07,921 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-12 21:56:07,921 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:56:07,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash 485695594, now seen corresponding path program 35 times [2024-09-12 21:56:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:56:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121492690] [2024-09-12 21:56:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:56:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:56:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:56:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:56:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:56:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:56:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:56:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:56:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:56:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:56:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:56:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:56:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:56:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:56:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:56:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:56:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:56:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:56:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:56:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:56:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 21:56:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:56:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 21:56:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:56:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 21:56:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:56:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 46 proven. 1105 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:56:09,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:56:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121492690] [2024-09-12 21:56:09,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121492690] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:56:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903612602] [2024-09-12 21:56:09,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 21:56:09,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:09,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:56:09,516 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:56:09,518 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-12 21:56:11,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-09-12 21:56:11,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:56:11,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-09-12 21:56:11,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:56:12,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:56:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 0 proven. 1151 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:56:17,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:56:17,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:56:17,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:56:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 46 proven. 1105 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-12 21:56:17,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903612602] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:56:17,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:56:17,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 55, 54] total 107 [2024-09-12 21:56:17,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595396850] [2024-09-12 21:56:17,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:56:17,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-12 21:56:17,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:56:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-12 21:56:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=11004, Unknown=0, NotChecked=0, Total=11342 [2024-09-12 21:56:17,832 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 107 states, 106 states have (on average 1.5471698113207548) internal successors, (164), 105 states have internal predecessors, (164), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 21:56:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:56:20,841 INFO L93 Difference]: Finished difference Result 212 states and 213 transitions. [2024-09-12 21:56:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-12 21:56:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.5471698113207548) internal successors, (164), 105 states have internal predecessors, (164), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 198 [2024-09-12 21:56:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:56:20,843 INFO L225 Difference]: With dead ends: 212 [2024-09-12 21:56:20,843 INFO L226 Difference]: Without dead ends: 210 [2024-09-12 21:56:20,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 346 SyntacticMatches, 47 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3715 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=366, Invalid=11844, Unknown=0, NotChecked=0, Total=12210 [2024-09-12 21:56:20,844 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 8504 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 8512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-09-12 21:56:20,844 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1668 Invalid, 8512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8504 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-09-12 21:56:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-09-12 21:56:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2024-09-12 21:56:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:56:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-12 21:56:20,921 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 198 [2024-09-12 21:56:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:56:20,921 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-12 21:56:20,921 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.5471698113207548) internal successors, (164), 105 states have internal predecessors, (164), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-12 21:56:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:20,921 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-12 21:56:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-12 21:56:20,922 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:56:20,922 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:56:20,941 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-12 21:56:21,123 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-12 21:56:21,123 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:56:21,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -546197602, now seen corresponding path program 36 times [2024-09-12 21:56:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:56:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649121711] [2024-09-12 21:56:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:56:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:56:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:56:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 21:56:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 21:56:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-12 21:56:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-12 21:56:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-12 21:56:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 21:56:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-12 21:56:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-12 21:56:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 21:56:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-12 21:56:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-12 21:56:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-12 21:56:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-12 21:56:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 21:56:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-12 21:56:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-12 21:56:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-12 21:56:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-12 21:56:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-12 21:56:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-12 21:56:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-12 21:56:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-12 21:56:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-12 21:56:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-12 21:56:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:56:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649121711] [2024-09-12 21:56:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649121711] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:56:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957277313] [2024-09-12 21:56:22,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 21:56:22,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:56:22,201 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:56:22,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-12 21:56:23,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-12 21:56:23,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:56:23,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-12 21:56:23,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:56:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:24,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:56:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957277313] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:56:25,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:56:25,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-09-12 21:56:25,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748648810] [2024-09-12 21:56:25,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:56:25,799 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-12 21:56:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:56:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-12 21:56:25,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:56:25,801 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 80 states, 80 states have (on average 1.7375) internal successors, (139), 80 states have internal predecessors, (139), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:56:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:56:26,238 INFO L93 Difference]: Finished difference Result 292 states and 318 transitions. [2024-09-12 21:56:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-12 21:56:26,238 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.7375) internal successors, (139), 80 states have internal predecessors, (139), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 205 [2024-09-12 21:56:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:56:26,240 INFO L225 Difference]: With dead ends: 292 [2024-09-12 21:56:26,240 INFO L226 Difference]: Without dead ends: 209 [2024-09-12 21:56:26,241 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 385 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-12 21:56:26,242 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 21:56:26,242 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 643 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 21:56:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-09-12 21:56:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-09-12 21:56:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 states have internal predecessors, (157), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-12 21:56:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2024-09-12 21:56:26,311 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 205 [2024-09-12 21:56:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:56:26,312 INFO L474 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2024-09-12 21:56:26,312 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.7375) internal successors, (139), 80 states have internal predecessors, (139), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:56:26,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2024-09-12 21:56:26,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-09-12 21:56:26,313 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:56:26,313 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:56:26,328 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-12 21:56:26,513 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-12 21:56:26,514 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:56:26,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1909758276, now seen corresponding path program 37 times [2024-09-12 21:56:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:56:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165018472] [2024-09-12 21:56:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:56:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:56:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:56:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:56:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:56:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:56:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:56:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:56:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:56:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:56:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:56:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:56:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:56:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:56:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:56:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:56:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:56:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:56:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:56:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:56:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:56:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:56:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:56:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:56:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 21:56:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:56:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:56:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165018472] [2024-09-12 21:56:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165018472] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:56:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699642834] [2024-09-12 21:56:28,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 21:56:28,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:56:28,255 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:56:28,256 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-12 21:56:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:28,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-09-12 21:56:28,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:56:29,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-09-12 21:56:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 1249 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:34,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:56:35,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-09-12 21:56:35,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-09-12 21:56:35,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 48 proven. 1201 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-12 21:56:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699642834] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:56:35,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:56:35,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 57, 56] total 111 [2024-09-12 21:56:35,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544107035] [2024-09-12 21:56:35,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:56:35,136 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-09-12 21:56:35,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:56:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-09-12 21:56:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=11859, Unknown=0, NotChecked=0, Total=12210 [2024-09-12 21:56:35,138 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 111 states, 110 states have (on average 1.5454545454545454) internal successors, (170), 109 states have internal predecessors, (170), 51 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:56:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:56:38,439 INFO L93 Difference]: Finished difference Result 220 states and 221 transitions. [2024-09-12 21:56:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-12 21:56:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.5454545454545454) internal successors, (170), 109 states have internal predecessors, (170), 51 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 206 [2024-09-12 21:56:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:56:38,441 INFO L225 Difference]: With dead ends: 220 [2024-09-12 21:56:38,441 INFO L226 Difference]: Without dead ends: 218 [2024-09-12 21:56:38,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 360 SyntacticMatches, 49 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=379, Invalid=12731, Unknown=0, NotChecked=0, Total=13110 [2024-09-12 21:56:38,442 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 9613 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 9622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-12 21:56:38,442 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1880 Invalid, 9622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9613 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-12 21:56:38,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-09-12 21:56:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-09-12 21:56:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 21:56:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-12 21:56:38,524 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2024-09-12 21:56:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:56:38,524 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-12 21:56:38,524 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.5454545454545454) internal successors, (170), 109 states have internal predecessors, (170), 51 states have call successors, (53), 4 states have call predecessors, (53), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 21:56:38,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:38,524 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-12 21:56:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-12 21:56:38,525 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:56:38,525 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:56:38,538 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-12 21:56:38,725 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-12 21:56:38,726 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:56:38,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash -140572404, now seen corresponding path program 38 times [2024-09-12 21:56:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:56:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874173953] [2024-09-12 21:56:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:56:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:56:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:56:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 21:56:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-12 21:56:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-12 21:56:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-12 21:56:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-12 21:56:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-12 21:56:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 21:56:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-12 21:56:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-12 21:56:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-12 21:56:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-12 21:56:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 21:56:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-12 21:56:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-12 21:56:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-12 21:56:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-12 21:56:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-12 21:56:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-12 21:56:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-12 21:56:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-12 21:56:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-12 21:56:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-12 21:56:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-12 21:56:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-12 21:56:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-12 21:56:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:56:39,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:56:39,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874173953] [2024-09-12 21:56:39,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874173953] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:56:39,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195139701] [2024-09-12 21:56:39,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 21:56:39,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:56:39,856 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:56:39,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-12 21:56:40,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 21:56:40,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:56:40,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-12 21:56:40,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:56:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:56:41,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:56:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:56:41,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195139701] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 21:56:41,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 21:56:41,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-09-12 21:56:41,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63851341] [2024-09-12 21:56:41,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 21:56:41,954 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-12 21:56:41,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:56:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-12 21:56:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:56:41,955 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 83 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 83 states have internal predecessors, (144), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:56:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 21:56:42,327 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2024-09-12 21:56:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-12 21:56:42,328 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 83 states have internal predecessors, (144), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 213 [2024-09-12 21:56:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 21:56:42,329 INFO L225 Difference]: With dead ends: 303 [2024-09-12 21:56:42,329 INFO L226 Difference]: Without dead ends: 217 [2024-09-12 21:56:42,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 400 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-12 21:56:42,330 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 21:56:42,330 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 21:56:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-12 21:56:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-09-12 21:56:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 162 states have internal predecessors, (163), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-12 21:56:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2024-09-12 21:56:42,420 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 213 [2024-09-12 21:56:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 21:56:42,420 INFO L474 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2024-09-12 21:56:42,420 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.7349397590361446) internal successors, (144), 83 states have internal predecessors, (144), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-12 21:56:42,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2024-09-12 21:56:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-09-12 21:56:42,421 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 21:56:42,421 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 21:56:42,434 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-12 21:56:42,621 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:42,622 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 21:56:42,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 21:56:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 683065898, now seen corresponding path program 39 times [2024-09-12 21:56:42,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 21:56:42,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530797327] [2024-09-12 21:56:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 21:56:42,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 21:56:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 21:56:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 21:56:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-12 21:56:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-12 21:56:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 21:56:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 21:56:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 21:56:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-12 21:56:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-12 21:56:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-12 21:56:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 21:56:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-12 21:56:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-12 21:56:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 21:56:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-12 21:56:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-12 21:56:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-12 21:56:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-12 21:56:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-12 21:56:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-12 21:56:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-12 21:56:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-12 21:56:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-12 21:56:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-12 21:56:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-12 21:56:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-12 21:56:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 21:56:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 50 proven. 1301 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:56:44,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 21:56:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530797327] [2024-09-12 21:56:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530797327] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:56:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392609556] [2024-09-12 21:56:44,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 21:56:44,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 21:56:44,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 21:56:44,542 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 21:56:44,544 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-12 21:56:55,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-09-12 21:56:55,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 21:56:55,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-12 21:56:55,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 21:56:56,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-09-12 21:57:05,883 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-09-12 21:57:05,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-09-12 21:57:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 925 proven. 426 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-12 21:57:06,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 21:57:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392609556] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 21:57:06,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 21:57:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 60] total 115 [2024-09-12 21:57:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026659693] [2024-09-12 21:57:06,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 21:57:06,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-09-12 21:57:06,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 21:57:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-09-12 21:57:06,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1320, Invalid=12252, Unknown=0, NotChecked=0, Total=13572 [2024-09-12 21:57:06,323 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 115 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 113 states have internal predecessors, (173), 52 states have call successors, (54), 4 states have call predecessors, (54), 2 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-12 21:57:12,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:16,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:20,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:25,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:29,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:33,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:37,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:41,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:46,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:50,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:54,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:57:58,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:03,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:07,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:11,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:15,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:20,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:24,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 21:58:28,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15