./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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/nla-digbench-scaling/hard2_valuebound5.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 --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-a9b967e-m [2024-09-12 16:13:52,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:13:52,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:13:52,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:13:52,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:13:52,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:13:52,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:13:52,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:13:52,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:13:52,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:13:52,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:13:52,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:13:52,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:13:52,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:13:52,569 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:13:52,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:13:52,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:13:52,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:13:52,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:13:52,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:13:52,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:13:52,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:13:52,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:13:52,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:13:52,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:13:52,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:13:52,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:13:52,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:13:52,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:13:52,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:13:52,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:13:52,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:13:52,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:13:52,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:13:52,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:13:52,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:13:52,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:13:52,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:13:52,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:13:52,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:13:52,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:13:52,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:13:52,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:13:52,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:13:52,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:13:52,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:13:52,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:13:52,912 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:13:52,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-12 16:13:54,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:13:54,564 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:13:54,565 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2024-09-12 16:13:54,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/945f111d5/838451cfd96f4ef494090669aa1f08be/FLAGba4250b94 [2024-09-12 16:13:54,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/945f111d5/838451cfd96f4ef494090669aa1f08be [2024-09-12 16:13:54,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:13:54,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:13:54,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:13:54,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:13:54,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:13:54,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314bcb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54, skipping insertion in model container [2024-09-12 16:13:54,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:13:54,781 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/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-12 16:13:54,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:13:54,815 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:13:54,827 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/nla-digbench-scaling/hard2_valuebound5.c[526,539] [2024-09-12 16:13:54,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:13:54,855 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:13:54,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54 WrapperNode [2024-09-12 16:13:54,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:13:54,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:13:54,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:13:54,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:13:54,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,875 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:13:54,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:13:54,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:13:54,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:13:54,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:13:54,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,909 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-12 16:13:54,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:13:54,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:13:54,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:13:54,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:13:54,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (1/1) ... [2024-09-12 16:13:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:13:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:13:54,967 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 16:13:54,969 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 16:13:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:13:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 16:13:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 16:13:55,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:13:55,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:13:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:13:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 16:13:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:13:55,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:13:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:13:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:13:55,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 16:13:55,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 16:13:55,070 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:13:55,071 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:13:55,243 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-12 16:13:55,243 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:13:55,272 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:13:55,272 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-12 16:13:55,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:13:55 BoogieIcfgContainer [2024-09-12 16:13:55,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:13:55,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:13:55,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:13:55,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:13:55,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:13:54" (1/3) ... [2024-09-12 16:13:55,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773186ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:13:55, skipping insertion in model container [2024-09-12 16:13:55,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:13:54" (2/3) ... [2024-09-12 16:13:55,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773186ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:13:55, skipping insertion in model container [2024-09-12 16:13:55,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:13:55" (3/3) ... [2024-09-12 16:13:55,284 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2024-09-12 16:13:55,299 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:13:55,300 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:13:55,362 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:13:55,368 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;@73b5b24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:13:55,369 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:13:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-12 16:13:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 16:13:55,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:55,380 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:55,381 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:55,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-12 16:13:55,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:55,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967077090] [2024-09-12 16:13:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:13:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:13:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,575 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 16:13:55,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967077090] [2024-09-12 16:13:55,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967077090] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:55,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 16:13:55,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098316672] [2024-09-12 16:13:55,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:55,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 16:13:55,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 16:13:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 16:13:55,613 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:13:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:55,643 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-12 16:13:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 16:13:55,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-12 16:13:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:55,651 INFO L225 Difference]: With dead ends: 58 [2024-09-12 16:13:55,651 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 16:13:55,655 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 16:13:55,660 INFO L434 NwaCegarLoop]: 39 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, 39 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 16:13:55,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:13:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 16:13:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-12 16:13:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 16:13:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-12 16:13:55,700 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-12 16:13:55,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:55,700 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-12 16:13:55,700 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:13:55,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:55,701 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-12 16:13:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-12 16:13:55,702 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:55,702 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:55,702 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:13:55,703 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:55,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:55,703 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-12 16:13:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:55,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747463826] [2024-09-12 16:13:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:13:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:13:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:55,876 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 16:13:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747463826] [2024-09-12 16:13:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747463826] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:55,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:55,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:13:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94597082] [2024-09-12 16:13:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:55,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:55,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:55,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:13:55,883 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:13:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:55,959 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-12 16:13:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:55,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-12 16:13:55,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:55,961 INFO L225 Difference]: With dead ends: 42 [2024-09-12 16:13:55,961 INFO L226 Difference]: Without dead ends: 40 [2024-09-12 16:13:55,961 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:13:55,962 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:55,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:13:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-12 16:13:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-12 16:13:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 16:13:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-12 16:13:55,977 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-12 16:13:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:55,978 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-12 16:13:55,978 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-12 16:13:55,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-12 16:13:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-12 16:13:55,980 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:55,980 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:55,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:13:55,980 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:55,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-12 16:13:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395681056] [2024-09-12 16:13:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:55,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:13:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:13:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:13:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:13:56,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395681056] [2024-09-12 16:13:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395681056] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:56,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:13:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172837217] [2024-09-12 16:13:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:56,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:13:56,134 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:13:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:56,198 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-12 16:13:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-12 16:13:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:56,200 INFO L225 Difference]: With dead ends: 46 [2024-09-12 16:13:56,201 INFO L226 Difference]: Without dead ends: 44 [2024-09-12 16:13:56,201 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:13:56,202 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:56,204 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:13:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-12 16:13:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-12 16:13:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-12 16:13:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-12 16:13:56,218 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-12 16:13:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:56,218 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-12 16:13:56,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 16:13:56,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-12 16:13:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-12 16:13:56,224 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:56,224 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:56,224 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 16:13:56,224 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:56,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-12 16:13:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258998860] [2024-09-12 16:13:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:56,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:13:56,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163921140] [2024-09-12 16:13:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:56,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:56,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:13:56,246 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 16:13:56,248 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 16:13:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 16:13:56,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:13:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:13:56,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:13:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258998860] [2024-09-12 16:13:56,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:13:56,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163921140] [2024-09-12 16:13:56,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163921140] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:56,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:56,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:13:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150218670] [2024-09-12 16:13:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:56,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:13:56,421 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:13:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:56,483 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-12 16:13:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-12 16:13:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:56,484 INFO L225 Difference]: With dead ends: 63 [2024-09-12 16:13:56,485 INFO L226 Difference]: Without dead ends: 50 [2024-09-12 16:13:56,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:13:56,486 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:56,486 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:13:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-12 16:13:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-12 16:13:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-12 16:13:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-12 16:13:56,496 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-12 16:13:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:56,497 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-12 16:13:56,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-12 16:13:56,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-12 16:13:56,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 16:13:56,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:56,499 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:56,515 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 16:13:56,703 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:56,704 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:56,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-12 16:13:56,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:56,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883505434] [2024-09-12 16:13:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:56,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:13:56,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943730426] [2024-09-12 16:13:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:13:56,721 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 16:13:56,729 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 16:13:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:56,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 16:13:56,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:13:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 16:13:56,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:13:56,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883505434] [2024-09-12 16:13:56,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:13:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943730426] [2024-09-12 16:13:56,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943730426] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:56,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:56,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:13:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379281760] [2024-09-12 16:13:56,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:56,882 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:56,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:13:56,884 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:13:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:56,969 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-12 16:13:56,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:56,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-12 16:13:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:56,972 INFO L225 Difference]: With dead ends: 63 [2024-09-12 16:13:56,972 INFO L226 Difference]: Without dead ends: 61 [2024-09-12 16:13:56,972 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:13:56,974 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:56,976 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:13:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-12 16:13:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-12 16:13:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 16:13:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-12 16:13:56,996 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-12 16:13:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:56,997 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-12 16:13:56,997 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:13:56,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-12 16:13:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 16:13:56,999 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:56,999 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:57,019 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 16:13:57,200 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:57,200 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-12 16:13:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840651858] [2024-09-12 16:13:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:13:57,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764599855] [2024-09-12 16:13:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:57,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:57,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:13:57,220 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 16:13:57,221 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 16:13:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 16:13:57,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:13:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 16:13:57,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:13:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-12 16:13:57,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840651858] [2024-09-12 16:13:57,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:13:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764599855] [2024-09-12 16:13:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764599855] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-12 16:13:57,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:13:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-12 16:13:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337031012] [2024-09-12 16:13:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:57,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:57,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:13:57,550 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:13:57,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:57,627 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-12 16:13:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:57,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-12 16:13:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:57,631 INFO L225 Difference]: With dead ends: 70 [2024-09-12 16:13:57,631 INFO L226 Difference]: Without dead ends: 68 [2024-09-12 16:13:57,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:13:57,632 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:57,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:13:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-12 16:13:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-12 16:13:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-12 16:13:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-12 16:13:57,653 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-12 16:13:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:57,654 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-12 16:13:57,654 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-12 16:13:57,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-12 16:13:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 16:13:57,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:57,656 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:57,672 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 16:13:57,859 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 16:13:57,860 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:57,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-12 16:13:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424944611] [2024-09-12 16:13:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:13:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:13:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:13:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:13:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:13:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:13:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:13:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-12 16:13:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-12 16:13:57,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:57,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424944611] [2024-09-12 16:13:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424944611] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:13:57,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:13:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:13:57,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364412381] [2024-09-12 16:13:57,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:13:57,993 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:13:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:13:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:13:57,994 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 16:13:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:13:58,055 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-12 16:13:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:13:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-12 16:13:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:13:58,057 INFO L225 Difference]: With dead ends: 75 [2024-09-12 16:13:58,057 INFO L226 Difference]: Without dead ends: 63 [2024-09-12 16:13:58,058 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:13:58,059 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:13:58,059 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:13:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-12 16:13:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-12 16:13:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-12 16:13:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-12 16:13:58,071 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-12 16:13:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:13:58,071 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-12 16:13:58,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-12 16:13:58,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-12 16:13:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-12 16:13:58,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:13:58,073 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:13:58,073 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-12 16:13:58,073 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:13:58,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:13:58,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-12 16:13:58,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:13:58,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579311276] [2024-09-12 16:13:58,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:58,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:13:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:13:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207320190] [2024-09-12 16:13:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:13:58,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:13:58,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:13:58,114 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 16:13:58,118 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 16:13:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:13:58,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-12 16:13:58,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:13:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-12 16:13:58,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:13:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-12 16:13:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:13:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579311276] [2024-09-12 16:13:59,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:13:59,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207320190] [2024-09-12 16:13:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207320190] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:13:59,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:13:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-12 16:13:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824754955] [2024-09-12 16:13:59,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:13:59,949 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 16:13:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:13:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 16:13:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-12 16:13:59,951 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-12 16:14:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:14:00,587 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-12 16:14:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:14:00,587 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-12 16:14:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:14:00,590 INFO L225 Difference]: With dead ends: 138 [2024-09-12 16:14:00,590 INFO L226 Difference]: Without dead ends: 115 [2024-09-12 16:14:00,591 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-12 16:14:00,591 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:14:00,592 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:14:00,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-12 16:14:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-12 16:14:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 16:14:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-12 16:14:00,629 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-12 16:14:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:14:00,629 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-12 16:14:00,630 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-12 16:14:00,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-12 16:14:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-12 16:14:00,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:14:00,634 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:14:00,651 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 16:14:00,837 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:00,838 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:14:00,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-12 16:14:00,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:14:00,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251040933] [2024-09-12 16:14:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:00,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:14:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:14:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618662814] [2024-09-12 16:14:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:00,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:00,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:14:00,884 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 16:14:00,887 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 16:14:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:00,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 16:14:00,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:14:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 16:14:01,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:14:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-12 16:14:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:14:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251040933] [2024-09-12 16:14:01,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:14:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618662814] [2024-09-12 16:14:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618662814] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:14:01,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:14:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-12 16:14:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135880048] [2024-09-12 16:14:01,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:14:01,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 16:14:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:14:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 16:14:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-12 16:14:01,742 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-12 16:14:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:14:02,427 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-12 16:14:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 16:14:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-12 16:14:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:14:02,430 INFO L225 Difference]: With dead ends: 168 [2024-09-12 16:14:02,430 INFO L226 Difference]: Without dead ends: 136 [2024-09-12 16:14:02,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-12 16:14:02,431 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 16:14:02,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 16:14:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-12 16:14:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-12 16:14:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-12 16:14:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-12 16:14:02,481 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-12 16:14:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:14:02,483 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-12 16:14:02,483 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-12 16:14:02,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-12 16:14:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-12 16:14:02,487 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:14:02,487 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:14:02,504 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 16:14:02,688 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:02,688 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:14:02,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-12 16:14:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:14:02,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860418682] [2024-09-12 16:14:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:14:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:14:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:14:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:14:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:14:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:14:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:14:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:14:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 16:14:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 16:14:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:02,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 16:14:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:03,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-12 16:14:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:03,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-12 16:14:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:03,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-12 16:14:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 16:14:03,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:14:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860418682] [2024-09-12 16:14:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860418682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:14:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377098928] [2024-09-12 16:14:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:03,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:14:03,021 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 16:14:03,023 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 16:14:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:14:03,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-12 16:14:03,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:14:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 16:14:03,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:14:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-12 16:14:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377098928] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:14:03,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:14:03,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-12 16:14:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857451521] [2024-09-12 16:14:03,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:14:03,643 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-12 16:14:03,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:14:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-12 16:14:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-12 16:14:03,644 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-12 16:14:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:14:03,838 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-12 16:14:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:14:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-12 16:14:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:14:03,841 INFO L225 Difference]: With dead ends: 129 [2024-09-12 16:14:03,841 INFO L226 Difference]: Without dead ends: 100 [2024-09-12 16:14:03,841 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-12 16:14:03,842 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:14:03,842 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:14:03,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-12 16:14:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-12 16:14:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-12 16:14:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-12 16:14:03,870 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-12 16:14:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:14:03,870 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-12 16:14:03,871 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-12 16:14:03,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-12 16:14:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-12 16:14:03,872 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:14:03,872 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:14:03,888 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 16:14:04,076 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 16:14:04,077 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:14:04,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-12 16:14:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:14:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316400283] [2024-09-12 16:14:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:04,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:14:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:14:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045528404] [2024-09-12 16:14:04,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:14:04,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:14:04,107 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 16:14:04,110 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 16:14:04,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:14:04,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:14:04,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-12 16:14:04,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:14:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 16:14:04,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:14:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-12 16:14:21,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:14:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316400283] [2024-09-12 16:14:21,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:14:21,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045528404] [2024-09-12 16:14:21,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045528404] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:14:21,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:14:21,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-12 16:14:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209394768] [2024-09-12 16:14:21,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:14:21,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:14:21,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:14:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:14:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:14:21,338 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 16:14:31,952 WARN L293 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 16:14:33,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:35,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:38,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:40,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:41,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:53,060 WARN L293 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-12 16:14:55,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-12 16:14:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:14:55,464 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2024-09-12 16:14:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-12 16:14:55,465 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-12 16:14:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:14:55,466 INFO L225 Difference]: With dead ends: 205 [2024-09-12 16:14:55,466 INFO L226 Difference]: Without dead ends: 172 [2024-09-12 16:14:55,467 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-12 16:14:55,468 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-09-12 16:14:55,468 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-09-12 16:14:55,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-12 16:14:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2024-09-12 16:14:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 107 states have internal predecessors, (117), 52 states have call successors, (52), 17 states have call predecessors, (52), 16 states have return successors, (50), 43 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-12 16:14:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 219 transitions. [2024-09-12 16:14:55,532 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 219 transitions. Word has length 93 [2024-09-12 16:14:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:14:55,532 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 219 transitions. [2024-09-12 16:14:55,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-12 16:14:55,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 219 transitions. [2024-09-12 16:14:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-12 16:14:55,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:14:55,534 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:14:55,552 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 16:14:55,734 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:55,735 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:14:55,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:14:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-12 16:14:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:14:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083460426] [2024-09-12 16:14:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:14:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:14:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:14:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607434049] [2024-09-12 16:14:55,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:14:55,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:14:55,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:14:55,785 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 16:14:55,786 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 16:14:55,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:14:55,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:14:55,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-12 16:14:55,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:14:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-12 16:14:56,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:14:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-12 16:14:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:14:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083460426] [2024-09-12 16:14:58,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:14:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607434049] [2024-09-12 16:14:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607434049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:14:58,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:14:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-12 16:14:58,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081499642] [2024-09-12 16:14:58,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:14:58,523 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 16:14:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:14:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 16:14:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-12 16:14:58,524 INFO L87 Difference]: Start difference. First operand 168 states and 219 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-12 16:15:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:01,889 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2024-09-12 16:15:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 16:15:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-12 16:15:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:01,892 INFO L225 Difference]: With dead ends: 238 [2024-09-12 16:15:01,892 INFO L226 Difference]: Without dead ends: 175 [2024-09-12 16:15:01,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 16:15:01,893 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:01,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 575 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-12 16:15:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-12 16:15:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2024-09-12 16:15:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 97 states have internal predecessors, (102), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-12 16:15:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2024-09-12 16:15:01,956 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 104 [2024-09-12 16:15:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:01,956 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2024-09-12 16:15:01,957 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-12 16:15:01,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2024-09-12 16:15:01,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-12 16:15:01,958 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:15:01,958 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:01,971 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 16:15:02,159 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:02,159 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:15:02,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-12 16:15:02,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:15:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896923058] [2024-09-12 16:15:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:02,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:15:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:15:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:15:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:15:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:15:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:15:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:15:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:15:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 16:15:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 16:15:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 16:15:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 16:15:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 16:15:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:15:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-12 16:15:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-12 16:15:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-12 16:15:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-12 16:15:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-12 16:15:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-12 16:15:02,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:15:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896923058] [2024-09-12 16:15:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896923058] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641310335] [2024-09-12 16:15:02,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:15:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:15:02,609 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 16:15:02,610 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 16:15:02,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:15:02,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:15:02,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-12 16:15:02,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:15:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-12 16:15:02,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:15:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-12 16:15:04,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641310335] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:15:04,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:15:04,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-12 16:15:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721588470] [2024-09-12 16:15:04,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:15:04,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 16:15:04,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:15:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 16:15:04,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-12 16:15:04,198 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-12 16:15:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:04,613 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2024-09-12 16:15:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 16:15:04,614 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-12 16:15:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:04,615 INFO L225 Difference]: With dead ends: 171 [2024-09-12 16:15:04,615 INFO L226 Difference]: Without dead ends: 129 [2024-09-12 16:15:04,616 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-12 16:15:04,617 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:04,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 407 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 16:15:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-12 16:15:04,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-09-12 16:15:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 83 states have internal predecessors, (86), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-12 16:15:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2024-09-12 16:15:04,665 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 109 [2024-09-12 16:15:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:04,665 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2024-09-12 16:15:04,665 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-12 16:15:04,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2024-09-12 16:15:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-12 16:15:04,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:15:04,667 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:04,684 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 16:15:04,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-12 16:15:04,872 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:15:04,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:04,872 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-12 16:15:04,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:15:04,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001309951] [2024-09-12 16:15:04,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:15:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:15:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:15:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:15:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:15:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:15:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:15:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:15:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 16:15:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 16:15:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 16:15:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 16:15:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 16:15:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:15:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 16:15:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 16:15:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 16:15:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 16:15:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 16:15:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 16:15:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 16:15:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 16:15:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:15:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001309951] [2024-09-12 16:15:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001309951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537629045] [2024-09-12 16:15:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:05,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:15:05,109 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 16:15:05,111 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 16:15:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:05,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-12 16:15:05,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:15:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 16:15:05,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:15:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 16:15:05,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537629045] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:15:05,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:15:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-12 16:15:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539104831] [2024-09-12 16:15:05,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:15:05,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-12 16:15:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:15:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-12 16:15:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-12 16:15:05,379 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-12 16:15:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:05,519 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-09-12 16:15:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 16:15:05,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-12 16:15:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:05,523 INFO L225 Difference]: With dead ends: 138 [2024-09-12 16:15:05,523 INFO L226 Difference]: Without dead ends: 131 [2024-09-12 16:15:05,523 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-12 16:15:05,524 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:05,524 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:15:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-12 16:15:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-12 16:15:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.103896103896104) internal successors, (85), 81 states have internal predecessors, (85), 32 states have call successors, (32), 17 states have call predecessors, (32), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-12 16:15:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2024-09-12 16:15:05,594 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 121 [2024-09-12 16:15:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:05,595 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2024-09-12 16:15:05,595 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-12 16:15:05,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2024-09-12 16:15:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-12 16:15:05,598 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:15:05,598 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:05,615 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-12 16:15:05,802 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-12 16:15:05,802 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:15:05,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1692740848, now seen corresponding path program 3 times [2024-09-12 16:15:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:15:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369208550] [2024-09-12 16:15:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:15:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:15:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:15:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:15:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:15:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:15:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:15:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:15:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 16:15:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 16:15:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 16:15:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 16:15:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 16:15:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:15:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 16:15:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 16:15:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 16:15:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 16:15:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 16:15:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 16:15:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 16:15:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 57 proven. 30 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-12 16:15:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:15:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369208550] [2024-09-12 16:15:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369208550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481160750] [2024-09-12 16:15:06,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:15:06,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:06,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:15:06,378 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 16:15:06,380 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 16:15:06,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 16:15:06,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:15:06,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-12 16:15:06,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:15:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 156 proven. 44 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-09-12 16:15:06,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:15:08,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481160750] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:08,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:15:08,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2024-09-12 16:15:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868818859] [2024-09-12 16:15:08,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:15:08,394 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:15:08,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:15:08,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:15:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-09-12 16:15:08,396 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) [2024-09-12 16:15:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:09,249 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2024-09-12 16:15:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-12 16:15:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) Word has length 123 [2024-09-12 16:15:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:09,252 INFO L225 Difference]: With dead ends: 217 [2024-09-12 16:15:09,252 INFO L226 Difference]: Without dead ends: 142 [2024-09-12 16:15:09,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=403, Invalid=1667, Unknown=0, NotChecked=0, Total=2070 [2024-09-12 16:15:09,254 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:09,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 522 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:15:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-12 16:15:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2024-09-12 16:15:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 85 states have internal predecessors, (88), 35 states have call successors, (35), 18 states have call predecessors, (35), 16 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 16:15:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2024-09-12 16:15:09,320 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 123 [2024-09-12 16:15:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:09,321 INFO L474 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2024-09-12 16:15:09,321 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 20 states have internal predecessors, (50), 11 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 12 states have call predecessors, (32), 10 states have call successors, (32) [2024-09-12 16:15:09,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2024-09-12 16:15:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-12 16:15:09,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:15:09,322 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:09,338 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 16:15:09,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 16:15:09,523 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:15:09,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash -455525364, now seen corresponding path program 2 times [2024-09-12 16:15:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:15:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993767442] [2024-09-12 16:15:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:15:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-12 16:15:09,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829979409] [2024-09-12 16:15:09,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:15:09,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:09,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:15:09,570 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 16:15:09,572 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 16:15:09,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:15:09,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:15:09,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 16:15:09,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:15:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 69 proven. 85 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-12 16:15:10,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:15:10,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:15:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993767442] [2024-09-12 16:15:10,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-12 16:15:10,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829979409] [2024-09-12 16:15:10,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829979409] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:10,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:15:10,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-12 16:15:10,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083541028] [2024-09-12 16:15:10,550 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-12 16:15:10,550 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 16:15:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:15:10,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 16:15:10,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-12 16:15:10,551 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-09-12 16:15:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:11,093 INFO L93 Difference]: Finished difference Result 180 states and 214 transitions. [2024-09-12 16:15:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 16:15:11,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 134 [2024-09-12 16:15:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:11,095 INFO L225 Difference]: With dead ends: 180 [2024-09-12 16:15:11,095 INFO L226 Difference]: Without dead ends: 142 [2024-09-12 16:15:11,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-09-12 16:15:11,096 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:11,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 625 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:15:11,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-09-12 16:15:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2024-09-12 16:15:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 86 states have internal predecessors, (90), 35 states have call successors, (35), 18 states have call predecessors, (35), 16 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-12 16:15:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2024-09-12 16:15:11,166 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 134 [2024-09-12 16:15:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:11,166 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2024-09-12 16:15:11,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 9 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-09-12 16:15:11,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2024-09-12 16:15:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-12 16:15:11,168 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:15:11,169 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:11,187 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 16:15:11,372 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 16:15:11,373 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:15:11,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1375550896, now seen corresponding path program 3 times [2024-09-12 16:15:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:15:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661363770] [2024-09-12 16:15:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:15:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:15:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:15:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:15:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-12 16:15:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 16:15:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-12 16:15:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 16:15:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-12 16:15:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-12 16:15:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-12 16:15:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 16:15:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-12 16:15:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-12 16:15:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-12 16:15:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-12 16:15:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-12 16:15:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-12 16:15:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-12 16:15:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 16:15:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-12 16:15:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-12 16:15:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-12 16:15:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-12 16:15:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:15:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-09-12 16:15:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:15:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661363770] [2024-09-12 16:15:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661363770] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:15:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184947695] [2024-09-12 16:15:11,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:15:11,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:15:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:15:11,580 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 16:15:11,581 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 16:15:11,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 16:15:11,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:15:11,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 16:15:11,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:15:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-12 16:15:11,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:15:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-12 16:15:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184947695] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:15:11,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:15:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 21 [2024-09-12 16:15:11,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617303467] [2024-09-12 16:15:11,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:15:11,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 16:15:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:15:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 16:15:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-09-12 16:15:11,992 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand has 21 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 12 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2024-09-12 16:15:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:15:12,374 INFO L93 Difference]: Finished difference Result 164 states and 188 transitions. [2024-09-12 16:15:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:15:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 12 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 134 [2024-09-12 16:15:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:15:12,375 INFO L225 Difference]: With dead ends: 164 [2024-09-12 16:15:12,376 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:15:12,376 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-09-12 16:15:12,377 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:15:12,377 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 386 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:15:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:15:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:15:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 16:15:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:15:12,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-12 16:15:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:15:12,378 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:15:12,378 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 12 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2024-09-12 16:15:12,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:15:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:15:12,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:15:12,381 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:15:12,393 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 16:15:12,582 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-12 16:15:12,585 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:15:12,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:15:14,154 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:15:14,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:15:14 BoogieIcfgContainer [2024-09-12 16:15:14,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:15:14,171 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:15:14,171 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:15:14,171 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:15:14,172 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:13:55" (3/4) ... [2024-09-12 16:15:14,173 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:15:14,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:15:14,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-12 16:15:14,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:15:14,176 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-12 16:15:14,179 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-12 16:15:14,179 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-12 16:15:14,179 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-12 16:15:14,179 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:15:14,179 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:15:14,258 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:15:14,258 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:15:14,258 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:15:14,259 INFO L158 Benchmark]: Toolchain (without parser) took 79663.33ms. Allocated memory was 83.9MB in the beginning and 255.9MB in the end (delta: 172.0MB). Free memory was 59.7MB in the beginning and 205.1MB in the end (delta: -145.4MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,259 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 54.5MB. Free memory was 37.5MB in the beginning and 37.4MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:15:14,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.25ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 47.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.90ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 46.8MB in the end (delta: 932.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,259 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:15:14,260 INFO L158 Benchmark]: RCFGBuilder took 348.85ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 55.3MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,260 INFO L158 Benchmark]: TraceAbstraction took 78894.54ms. Allocated memory was 83.9MB in the beginning and 255.9MB in the end (delta: 172.0MB). Free memory was 54.5MB in the beginning and 210.4MB in the end (delta: -155.8MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,260 INFO L158 Benchmark]: Witness Printer took 87.07ms. Allocated memory is still 255.9MB. Free memory was 210.4MB in the beginning and 205.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-12 16:15:14,262 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 54.5MB. Free memory was 37.5MB in the beginning and 37.4MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.25ms. Allocated memory is still 83.9MB. Free memory was 59.4MB in the beginning and 47.7MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.90ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 46.8MB in the end (delta: 932.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 45.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.85ms. Allocated memory is still 83.9MB. Free memory was 45.0MB in the beginning and 55.3MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 78894.54ms. Allocated memory was 83.9MB in the beginning and 255.9MB in the end (delta: 172.0MB). Free memory was 54.5MB in the beginning and 210.4MB in the end (delta: -155.8MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. * Witness Printer took 87.07ms. Allocated memory is still 255.9MB. Free memory was 210.4MB in the beginning and 205.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.2s, OverallIterations: 17, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 395 SdHoareTripleChecker+Valid, 16.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 4526 SdHoareTripleChecker+Invalid, 15.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3904 mSDsCounter, 549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4073 IncrementalHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 549 mSolverCounterUnsat, 622 mSDtfsCounter, 4073 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2322 GetRequests, 2053 SyntacticMatches, 10 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 31.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=11, InterpolantAutomatonStates: 191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 91 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 30.5s InterpolantComputationTime, 2374 NumberOfCodeBlocks, 2247 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2593 ConstructedInterpolants, 0 QuantifiedInterpolants, 22523 SizeOfPredicates, 31 NumberOfNonLiveVariables, 2539 ConjunctsInSsa, 378 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 11088/11848 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((A == ((long long) r + 1)) && (d == 1)) && (B == 1)) && (q == 1)) && (p == 1))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) || ((((((A == (q + r)) && (d == p)) && (0 <= A)) && (1 <= p)) && (B == 1)) && (A <= 5))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((A == r) && (p == 8)) && (r <= 5)) && (q == 0)) && (B == 1)) && (d == 8)) && (4 <= r)) || (((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4)) && (A <= 5))) || (((((((0 <= A) && (A == r)) && (r <= 5)) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) || (((((((0 <= A) && (A == r)) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) && (A <= 5))) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-12 16:15:14,355 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE