./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:34:46,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:34:46,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:34:46,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:34:46,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:34:46,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:34:46,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:34:46,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:34:46,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:34:46,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:34:46,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:34:46,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:34:46,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:34:46,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:34:46,310 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:34:46,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:34:46,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:34:46,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:34:46,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:34:46,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:34:46,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:34:46,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:34:46,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:34:46,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:34:46,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:34:46,317 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:34:46,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:34:46,317 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:34:46,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:34:46,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:34:46,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:34:46,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:34:46,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:34:46,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:34:46,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:34:46,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:34:46,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:34:46,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:34:46,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:34:46,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:34:46,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:34:46,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:34:46,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:34:46,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:34:46,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:34:46,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:34:46,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:34:46,624 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:34:46,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-24 23:34:47,986 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:34:48,168 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:34:48,169 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2024-09-24 23:34:48,175 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/613e2d8ca/9bb6c4fdd5384c30b1e68d679d82064d/FLAG6bb115042 [2024-09-24 23:34:48,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/613e2d8ca/9bb6c4fdd5384c30b1e68d679d82064d [2024-09-24 23:34:48,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:34:48,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:34:48,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:34:48,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:34:48,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:34:48,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b97d020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48, skipping insertion in model container [2024-09-24 23:34:48,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:34:48,739 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-24 23:34:48,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:34:48,771 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:34:48,783 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2024-09-24 23:34:48,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:34:48,823 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:34:48,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48 WrapperNode [2024-09-24 23:34:48,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:34:48,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:34:48,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:34:48,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:34:48,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,855 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:34:48,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:34:48,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:34:48,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:34:48,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:34:48,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,880 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:34:48,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:34:48,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:34:48,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:34:48,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:34:48,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (1/1) ... [2024-09-24 23:34:48,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:34:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:48,924 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) [2024-09-24 23:34:48,927 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 [2024-09-24 23:34:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:34:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:34:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:34:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:34:48,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:34:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:34:48,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:34:48,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:34:48,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:34:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:34:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:34:48,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:34:49,025 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:34:49,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:34:49,195 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-24 23:34:49,195 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:34:49,230 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:34:49,231 INFO L317 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-24 23:34:49,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:34:49 BoogieIcfgContainer [2024-09-24 23:34:49,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:34:49,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:34:49,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:34:49,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:34:49,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:34:48" (1/3) ... [2024-09-24 23:34:49,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:34:49, skipping insertion in model container [2024-09-24 23:34:49,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:34:48" (2/3) ... [2024-09-24 23:34:49,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:34:49, skipping insertion in model container [2024-09-24 23:34:49,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:34:49" (3/3) ... [2024-09-24 23:34:49,239 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2024-09-24 23:34:49,253 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:34:49,254 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:34:49,322 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:34:49,330 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;@62e011ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:34:49,331 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:34:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-24 23:34:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-24 23:34:49,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:49,343 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-24 23:34:49,344 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:49,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:49,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2011850563, now seen corresponding path program 1 times [2024-09-24 23:34:49,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534141530] [2024-09-24 23:34:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:34:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:34:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:34:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:34:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:34:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:34:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:34:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:34:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534141530] [2024-09-24 23:34:49,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534141530] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:34:49,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:34:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:34:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714258454] [2024-09-24 23:34:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:34:49,619 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:34:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:34:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:34:49,644 INFO L87 Difference]: Start difference. First operand has 38 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:34:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:49,685 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2024-09-24 23:34:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:34:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2024-09-24 23:34:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:49,697 INFO L225 Difference]: With dead ends: 70 [2024-09-24 23:34:49,698 INFO L226 Difference]: Without dead ends: 34 [2024-09-24 23:34:49,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:34:49,705 INFO L434 NwaCegarLoop]: 47 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, 47 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 [2024-09-24 23:34:49,705 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:34:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-24 23:34:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-24 23:34:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:34:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-24 23:34:49,737 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 42 [2024-09-24 23:34:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:49,737 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-24 23:34:49,738 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-24 23:34:49,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-24 23:34:49,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-24 23:34:49,741 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:49,742 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-24 23:34:49,742 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:34:49,742 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:49,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash -213832741, now seen corresponding path program 1 times [2024-09-24 23:34:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:49,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605786403] [2024-09-24 23:34:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:34:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:34:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:34:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:34:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:34:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:34:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:34:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-24 23:34:50,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605786403] [2024-09-24 23:34:50,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605786403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:34:50,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794210744] [2024-09-24 23:34:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:50,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:50,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:50,112 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) [2024-09-24 23:34:50,115 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:34:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:50,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-24 23:34:50,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-24 23:34:50,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:34:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794210744] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:34:50,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:34:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-09-24 23:34:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711966674] [2024-09-24 23:34:50,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:34:50,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:34:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:34:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:34:50,680 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-24 23:34:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:50,939 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-09-24 23:34:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:34:50,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 43 [2024-09-24 23:34:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:50,941 INFO L225 Difference]: With dead ends: 55 [2024-09-24 23:34:50,941 INFO L226 Difference]: Without dead ends: 47 [2024-09-24 23:34:50,942 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:34:50,943 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:50,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 233 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:34:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-24 23:34:50,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-09-24 23:34:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:34:50,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2024-09-24 23:34:50,960 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 43 [2024-09-24 23:34:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:50,961 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2024-09-24 23:34:50,961 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-24 23:34:50,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2024-09-24 23:34:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-24 23:34:50,963 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:50,963 INFO L216 NwaCegarLoop]: trace histogram [6, 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] [2024-09-24 23:34:50,982 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:34:51,164 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:51,165 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:51,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:51,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462229, now seen corresponding path program 1 times [2024-09-24 23:34:51,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:51,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886346855] [2024-09-24 23:34:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:51,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583618511] [2024-09-24 23:34:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:51,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:51,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:51,203 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) [2024-09-24 23:34:51,204 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:34:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:51,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:34:51,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:34:51,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:34:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886346855] [2024-09-24 23:34:51,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583618511] [2024-09-24 23:34:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583618511] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:34:51,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:34:51,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:34:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465441809] [2024-09-24 23:34:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:34:51,325 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:34:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:51,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:34:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:34:51,327 INFO L87 Difference]: Start difference. First operand 46 states and 61 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-24 23:34:51,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:51,388 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-09-24 23:34:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:34:51,389 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2024-09-24 23:34:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:51,390 INFO L225 Difference]: With dead ends: 65 [2024-09-24 23:34:51,392 INFO L226 Difference]: Without dead ends: 63 [2024-09-24 23:34:51,393 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:34:51,394 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:51,395 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:34:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-24 23:34:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-09-24 23:34:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:34:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-09-24 23:34:51,416 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 44 [2024-09-24 23:34:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:51,417 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-09-24 23:34:51,417 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-09-24 23:34:51,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2024-09-24 23:34:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-24 23:34:51,419 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:51,419 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:34:51,436 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:34:51,623 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:51,624 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:51,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash -189867411, now seen corresponding path program 1 times [2024-09-24 23:34:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122862980] [2024-09-24 23:34:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766413475] [2024-09-24 23:34:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:51,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:51,662 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) [2024-09-24 23:34:51,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:34:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:51,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:34:51,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-24 23:34:51,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:34:51,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122862980] [2024-09-24 23:34:51,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766413475] [2024-09-24 23:34:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766413475] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:34:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:34:51,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:34:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221632417] [2024-09-24 23:34:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:34:51,794 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:34:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:34:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:34:51,795 INFO L87 Difference]: Start difference. First operand 54 states and 70 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) [2024-09-24 23:34:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:51,840 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-24 23:34:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:34:51,841 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 [2024-09-24 23:34:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:51,843 INFO L225 Difference]: With dead ends: 61 [2024-09-24 23:34:51,844 INFO L226 Difference]: Without dead ends: 59 [2024-09-24 23:34:51,844 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:34:51,845 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:51,845 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 154 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:34:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-24 23:34:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-09-24 23:34:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 34 states have internal predecessors, (35), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:34:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-24 23:34:51,857 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 49 [2024-09-24 23:34:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:51,858 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-24 23:34:51,858 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) [2024-09-24 23:34:51,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:51,859 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-24 23:34:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-24 23:34:51,860 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:51,860 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:34:51,875 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-24 23:34:52,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:52,061 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:52,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -470549715, now seen corresponding path program 1 times [2024-09-24 23:34:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:52,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503192012] [2024-09-24 23:34:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833100557] [2024-09-24 23:34:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:52,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:52,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:52,083 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) [2024-09-24 23:34:52,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:34:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:52,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:34:52,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-09-24 23:34:52,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:34:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503192012] [2024-09-24 23:34:52,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833100557] [2024-09-24 23:34:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833100557] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:34:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:34:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:34:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713110623] [2024-09-24 23:34:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:34:52,297 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:34:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:34:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:34:52,299 INFO L87 Difference]: Start difference. First operand 58 states and 73 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:34:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:52,371 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-09-24 23:34:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:34:52,371 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2024-09-24 23:34:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:52,372 INFO L225 Difference]: With dead ends: 65 [2024-09-24 23:34:52,373 INFO L226 Difference]: Without dead ends: 63 [2024-09-24 23:34:52,373 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:34:52,374 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:52,376 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 141 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:34:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-24 23:34:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-09-24 23:34:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 37 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-24 23:34:52,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-09-24 23:34:52,394 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 59 [2024-09-24 23:34:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:52,395 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-09-24 23:34:52,395 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-24 23:34:52,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-09-24 23:34:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-24 23:34:52,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:52,397 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:34:52,413 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-24 23:34:52,601 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:52,602 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:52,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash 487403380, now seen corresponding path program 1 times [2024-09-24 23:34:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487397462] [2024-09-24 23:34:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:52,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:52,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600984880] [2024-09-24 23:34:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:52,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:52,640 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) [2024-09-24 23:34:52,643 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-24 23:34:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:52,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-24 23:34:52,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:34:52,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:34:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:34:52,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487397462] [2024-09-24 23:34:52,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600984880] [2024-09-24 23:34:52,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600984880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:34:52,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:34:52,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-09-24 23:34:52,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683452286] [2024-09-24 23:34:52,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:34:52,883 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:34:52,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:34:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:34:52,884 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-24 23:34:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:52,984 INFO L93 Difference]: Finished difference Result 90 states and 121 transitions. [2024-09-24 23:34:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:34:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2024-09-24 23:34:52,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:52,986 INFO L225 Difference]: With dead ends: 90 [2024-09-24 23:34:52,986 INFO L226 Difference]: Without dead ends: 88 [2024-09-24 23:34:52,986 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:34:52,987 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:52,987 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:34:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-24 23:34:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2024-09-24 23:34:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:34:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-09-24 23:34:53,003 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 66 [2024-09-24 23:34:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:53,004 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-09-24 23:34:53,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-09-24 23:34:53,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-09-24 23:34:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-24 23:34:53,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:53,006 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:34:53,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-24 23:34:53,210 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-24 23:34:53,211 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:53,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2098403842, now seen corresponding path program 1 times [2024-09-24 23:34:53,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:53,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470831822] [2024-09-24 23:34:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:34:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:34:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:34:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:34:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:34:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:34:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:34:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:34:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:34:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:34:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:34:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-24 23:34:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470831822] [2024-09-24 23:34:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470831822] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:34:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963960497] [2024-09-24 23:34:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:53,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:53,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:53,384 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) [2024-09-24 23:34:53,386 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-24 23:34:53,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:53,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:34:53,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-24 23:34:53,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:34:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-09-24 23:34:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963960497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:34:53,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:34:53,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-09-24 23:34:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708408822] [2024-09-24 23:34:53,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:34:53,583 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-24 23:34:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-24 23:34:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:34:53,584 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-24 23:34:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:53,761 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2024-09-24 23:34:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:34:53,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 68 [2024-09-24 23:34:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:53,764 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:34:53,764 INFO L226 Difference]: Without dead ends: 97 [2024-09-24 23:34:53,764 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:34:53,765 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:53,765 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 311 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:34:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-24 23:34:53,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2024-09-24 23:34:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-24 23:34:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 121 transitions. [2024-09-24 23:34:53,805 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 121 transitions. Word has length 68 [2024-09-24 23:34:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:53,805 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 121 transitions. [2024-09-24 23:34:53,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-09-24 23:34:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 121 transitions. [2024-09-24 23:34:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-24 23:34:53,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:53,807 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:34:53,824 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-24 23:34:54,007 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:54,008 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:54,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1520512592, now seen corresponding path program 1 times [2024-09-24 23:34:54,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:54,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904344236] [2024-09-24 23:34:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:54,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:54,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994140573] [2024-09-24 23:34:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:54,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:54,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:54,027 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) [2024-09-24 23:34:54,029 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-24 23:34:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:34:54,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-24 23:34:54,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-24 23:34:54,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:34:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904344236] [2024-09-24 23:34:54,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994140573] [2024-09-24 23:34:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994140573] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:34:54,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:34:54,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-09-24 23:34:54,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053639694] [2024-09-24 23:34:54,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-24 23:34:54,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:34:54,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:54,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:34:54,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:34:54,258 INFO L87 Difference]: Start difference. First operand 88 states and 121 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-24 23:34:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:54,389 INFO L93 Difference]: Finished difference Result 123 states and 172 transitions. [2024-09-24 23:34:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:34:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2024-09-24 23:34:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:54,392 INFO L225 Difference]: With dead ends: 123 [2024-09-24 23:34:54,392 INFO L226 Difference]: Without dead ends: 120 [2024-09-24 23:34:54,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:34:54,393 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:54,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 208 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:34:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-24 23:34:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2024-09-24 23:34:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 63 states have internal predecessors, (74), 47 states have call successors, (47), 9 states have call predecessors, (47), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-24 23:34:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2024-09-24 23:34:54,436 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 74 [2024-09-24 23:34:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:54,437 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2024-09-24 23:34:54,437 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-24 23:34:54,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2024-09-24 23:34:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-24 23:34:54,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:54,439 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2024-09-24 23:34:54,455 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-24 23:34:54,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:54,643 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:54,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1071513618, now seen corresponding path program 2 times [2024-09-24 23:34:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767661233] [2024-09-24 23:34:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570956407] [2024-09-24 23:34:54,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:34:54,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:54,669 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) [2024-09-24 23:34:54,671 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-24 23:34:54,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:34:54,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:34:54,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-24 23:34:54,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-24 23:34:54,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:34:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:34:55,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767661233] [2024-09-24 23:34:55,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:34:55,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570956407] [2024-09-24 23:34:55,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570956407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:34:55,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:34:55,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-24 23:34:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515204458] [2024-09-24 23:34:55,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-24 23:34:55,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-24 23:34:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:34:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-24 23:34:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:34:55,052 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-24 23:34:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:34:55,220 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2024-09-24 23:34:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:34:55,221 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2024-09-24 23:34:55,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:34:55,222 INFO L225 Difference]: With dead ends: 129 [2024-09-24 23:34:55,222 INFO L226 Difference]: Without dead ends: 127 [2024-09-24 23:34:55,223 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:34:55,223 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:34:55,224 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 229 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:34:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-24 23:34:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-09-24 23:34:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 47 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-24 23:34:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2024-09-24 23:34:55,254 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 79 [2024-09-24 23:34:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:34:55,254 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2024-09-24 23:34:55,254 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-24 23:34:55,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2024-09-24 23:34:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-24 23:34:55,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:34:55,256 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1, 1, 1] [2024-09-24 23:34:55,273 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-24 23:34:55,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:55,461 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:34:55,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:34:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash 807735120, now seen corresponding path program 3 times [2024-09-24 23:34:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:34:55,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399596238] [2024-09-24 23:34:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:34:55,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:34:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:34:55,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973387018] [2024-09-24 23:34:55,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:34:55,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:34:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:34:55,479 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) [2024-09-24 23:34:55,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-24 23:34:55,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-24 23:34:55,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:34:55,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-24 23:34:55,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:34:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-09-24 23:34:56,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:10,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399596238] [2024-09-24 23:35:10,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:35:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973387018] [2024-09-24 23:35:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973387018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:10,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-24 23:35:10,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-24 23:35:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245502781] [2024-09-24 23:35:10,400 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:10,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:35:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:10,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:35:10,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2024-09-24 23:35:10,402 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-24 23:35:10,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:10,883 INFO L93 Difference]: Finished difference Result 133 states and 178 transitions. [2024-09-24 23:35:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:35:10,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 84 [2024-09-24 23:35:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:10,886 INFO L225 Difference]: With dead ends: 133 [2024-09-24 23:35:10,886 INFO L226 Difference]: Without dead ends: 131 [2024-09-24 23:35:10,886 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=163, Invalid=706, Unknown=1, NotChecked=0, Total=870 [2024-09-24 23:35:10,887 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 32 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:10,889 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 271 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:35:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-24 23:35:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-09-24 23:35:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 47 states have call successors, (47), 12 states have call predecessors, (47), 11 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-24 23:35:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2024-09-24 23:35:10,930 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 84 [2024-09-24 23:35:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:10,931 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2024-09-24 23:35:10,931 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2024-09-24 23:35:10,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2024-09-24 23:35:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-24 23:35:10,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:10,932 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:10,950 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-24 23:35:11,133 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-24 23:35:11,133 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:11,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash -607760099, now seen corresponding path program 1 times [2024-09-24 23:35:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594204777] [2024-09-24 23:35:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:11,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:35:11,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732887730] [2024-09-24 23:35:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:11,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:11,151 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) [2024-09-24 23:35:11,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-24 23:35:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:11,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-24 23:35:11,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-09-24 23:35:11,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-24 23:35:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594204777] [2024-09-24 23:35:12,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:35:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732887730] [2024-09-24 23:35:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732887730] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:12,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:35:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-09-24 23:35:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689502872] [2024-09-24 23:35:12,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:12,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-24 23:35:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-24 23:35:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:35:12,485 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-24 23:35:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:15,553 INFO L93 Difference]: Finished difference Result 229 states and 337 transitions. [2024-09-24 23:35:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-24 23:35:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 90 [2024-09-24 23:35:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:15,556 INFO L225 Difference]: With dead ends: 229 [2024-09-24 23:35:15,556 INFO L226 Difference]: Without dead ends: 225 [2024-09-24 23:35:15,557 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:35:15,558 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 75 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:15,558 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 451 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-09-24 23:35:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-09-24 23:35:15,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2024-09-24 23:35:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 96 states have call successors, (96), 14 states have call predecessors, (96), 13 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-24 23:35:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 328 transitions. [2024-09-24 23:35:15,652 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 328 transitions. Word has length 90 [2024-09-24 23:35:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:15,653 INFO L474 AbstractCegarLoop]: Abstraction has 222 states and 328 transitions. [2024-09-24 23:35:15,653 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 10 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-24 23:35:15,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 328 transitions. [2024-09-24 23:35:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-24 23:35:15,655 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:15,655 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2024-09-24 23:35:15,670 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-24 23:35:15,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-24 23:35:15,856 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:15,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1117188045, now seen corresponding path program 4 times [2024-09-24 23:35:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922370817] [2024-09-24 23:35:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:35:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:35:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:35:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:15,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:35:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-24 23:35:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-09-24 23:35:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922370817] [2024-09-24 23:35:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922370817] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:35:16,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:35:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:35:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697310314] [2024-09-24 23:35:16,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:35:16,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:35:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:35:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:35:16,012 INFO L87 Difference]: Start difference. First operand 222 states and 328 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-24 23:35:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:16,156 INFO L93 Difference]: Finished difference Result 275 states and 404 transitions. [2024-09-24 23:35:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:35:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 99 [2024-09-24 23:35:16,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:16,159 INFO L225 Difference]: With dead ends: 275 [2024-09-24 23:35:16,159 INFO L226 Difference]: Without dead ends: 201 [2024-09-24 23:35:16,160 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:35:16,162 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:16,162 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 179 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:35:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-09-24 23:35:16,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2024-09-24 23:35:16,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 80 states have call successors, (80), 14 states have call predecessors, (80), 13 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2024-09-24 23:35:16,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2024-09-24 23:35:16,242 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 99 [2024-09-24 23:35:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:16,245 INFO L474 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2024-09-24 23:35:16,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-24 23:35:16,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2024-09-24 23:35:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-09-24 23:35:16,247 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:16,247 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:16,247 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-09-24 23:35:16,247 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2069519471, now seen corresponding path program 1 times [2024-09-24 23:35:16,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339311890] [2024-09-24 23:35:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:35:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:35:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:35:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:35:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:35:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-24 23:35:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:35:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-24 23:35:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339311890] [2024-09-24 23:35:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339311890] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733801423] [2024-09-24 23:35:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:16,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:16,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:16,529 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) [2024-09-24 23:35:16,530 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-24 23:35:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:16,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-24 23:35:16,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-09-24 23:35:16,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-09-24 23:35:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733801423] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:16,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:35:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-24 23:35:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294845021] [2024-09-24 23:35:16,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:16,810 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-24 23:35:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-24 23:35:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:35:16,810 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-24 23:35:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:17,083 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2024-09-24 23:35:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:35:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 106 [2024-09-24 23:35:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:17,085 INFO L225 Difference]: With dead ends: 255 [2024-09-24 23:35:17,085 INFO L226 Difference]: Without dead ends: 168 [2024-09-24 23:35:17,086 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-09-24 23:35:17,086 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 31 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:17,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 303 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:35:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-24 23:35:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-24 23:35:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 89 states have internal predecessors, (99), 68 states have call successors, (68), 14 states have call predecessors, (68), 13 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-24 23:35:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 232 transitions. [2024-09-24 23:35:17,156 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 232 transitions. Word has length 106 [2024-09-24 23:35:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:17,156 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 232 transitions. [2024-09-24 23:35:17,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-09-24 23:35:17,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 232 transitions. [2024-09-24 23:35:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-09-24 23:35:17,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:17,158 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:17,175 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-24 23:35:17,359 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:17,359 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:17,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1527784632, now seen corresponding path program 1 times [2024-09-24 23:35:17,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:17,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570608793] [2024-09-24 23:35:17,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:17,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:35:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:35:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:35:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:35:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:35:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-24 23:35:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:35:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:35:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:35:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-24 23:35:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570608793] [2024-09-24 23:35:17,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570608793] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295188924] [2024-09-24 23:35:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:17,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:17,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:17,515 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) [2024-09-24 23:35:17,516 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-24 23:35:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:17,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:35:17,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 88 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-09-24 23:35:17,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-09-24 23:35:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295188924] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:17,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:35:17,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-09-24 23:35:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288702962] [2024-09-24 23:35:17,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:17,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:35:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:35:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:35:17,753 INFO L87 Difference]: Start difference. First operand 168 states and 232 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-24 23:35:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:17,986 INFO L93 Difference]: Finished difference Result 194 states and 271 transitions. [2024-09-24 23:35:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-24 23:35:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 120 [2024-09-24 23:35:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:17,989 INFO L225 Difference]: With dead ends: 194 [2024-09-24 23:35:17,989 INFO L226 Difference]: Without dead ends: 182 [2024-09-24 23:35:17,989 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-09-24 23:35:17,990 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 17 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:17,990 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 337 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:35:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-09-24 23:35:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2024-09-24 23:35:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 83 states have (on average 1.144578313253012) internal successors, (95), 85 states have internal predecessors, (95), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-24 23:35:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 226 transitions. [2024-09-24 23:35:18,061 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 226 transitions. Word has length 120 [2024-09-24 23:35:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:18,062 INFO L474 AbstractCegarLoop]: Abstraction has 163 states and 226 transitions. [2024-09-24 23:35:18,062 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-09-24 23:35:18,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 226 transitions. [2024-09-24 23:35:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-24 23:35:18,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:18,063 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:18,080 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-24 23:35:18,264 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-24 23:35:18,264 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:18,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2141824020, now seen corresponding path program 2 times [2024-09-24 23:35:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926570361] [2024-09-24 23:35:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:18,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:35:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:35:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:35:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:35:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:35:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-24 23:35:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:35:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:35:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-24 23:35:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-24 23:35:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926570361] [2024-09-24 23:35:18,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926570361] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:18,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621143423] [2024-09-24 23:35:18,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:35:18,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:18,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:18,543 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) [2024-09-24 23:35:18,545 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-24 23:35:18,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:35:18,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:18,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-24 23:35:18,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-09-24 23:35:18,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 32 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-09-24 23:35:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621143423] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:18,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:35:18,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2024-09-24 23:35:18,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748043071] [2024-09-24 23:35:18,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:18,915 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:35:18,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:35:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:35:18,917 INFO L87 Difference]: Start difference. First operand 163 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-24 23:35:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:19,177 INFO L93 Difference]: Finished difference Result 196 states and 273 transitions. [2024-09-24 23:35:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-24 23:35:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) Word has length 121 [2024-09-24 23:35:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:19,179 INFO L225 Difference]: With dead ends: 196 [2024-09-24 23:35:19,180 INFO L226 Difference]: Without dead ends: 160 [2024-09-24 23:35:19,180 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-09-24 23:35:19,181 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:19,181 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:35:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-24 23:35:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-24 23:35:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 80 states have (on average 1.1125) internal successors, (89), 82 states have internal predecessors, (89), 67 states have call successors, (67), 13 states have call predecessors, (67), 12 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-24 23:35:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2024-09-24 23:35:19,254 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 121 [2024-09-24 23:35:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:19,256 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2024-09-24 23:35:19,256 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2024-09-24 23:35:19,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2024-09-24 23:35:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-24 23:35:19,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:19,258 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1] [2024-09-24 23:35:19,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-24 23:35:19,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-24 23:35:19,459 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:19,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -83573063, now seen corresponding path program 2 times [2024-09-24 23:35:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325106331] [2024-09-24 23:35:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:35:19,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045558281] [2024-09-24 23:35:19,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:35:19,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:19,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:19,483 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:35:19,487 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-24 23:35:19,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:35:19,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:19,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-24 23:35:19,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-09-24 23:35:20,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-09-24 23:35:22,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:22,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325106331] [2024-09-24 23:35:22,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:35:22,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045558281] [2024-09-24 23:35:22,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045558281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:22,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:35:22,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2024-09-24 23:35:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638770371] [2024-09-24 23:35:22,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:22,182 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-24 23:35:22,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:22,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-24 23:35:22,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-24 23:35:22,184 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-24 23:35:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:25,062 INFO L93 Difference]: Finished difference Result 270 states and 385 transitions. [2024-09-24 23:35:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-24 23:35:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) Word has length 137 [2024-09-24 23:35:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:25,066 INFO L225 Difference]: With dead ends: 270 [2024-09-24 23:35:25,066 INFO L226 Difference]: Without dead ends: 237 [2024-09-24 23:35:25,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-09-24 23:35:25,067 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 118 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:25,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 544 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-09-24 23:35:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-09-24 23:35:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2024-09-24 23:35:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 118 states have internal predecessors, (132), 96 states have call successors, (96), 16 states have call predecessors, (96), 15 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2024-09-24 23:35:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2024-09-24 23:35:25,168 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 137 [2024-09-24 23:35:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:25,168 INFO L474 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2024-09-24 23:35:25,168 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 14 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (44), 12 states have call predecessors, (44), 12 states have call successors, (44) [2024-09-24 23:35:25,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2024-09-24 23:35:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-09-24 23:35:25,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:25,170 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1] [2024-09-24 23:35:25,187 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-24 23:35:25,370 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-24 23:35:25,370 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:25,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:25,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2038270089, now seen corresponding path program 2 times [2024-09-24 23:35:25,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:25,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194528716] [2024-09-24 23:35:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:25,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:35:25,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211654402] [2024-09-24 23:35:25,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:35:25,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:25,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:25,395 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:35:25,398 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-24 23:35:25,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:35:25,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:25,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-24 23:35:25,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 84 proven. 56 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-09-24 23:35:26,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 86 proven. 7 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-09-24 23:35:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194528716] [2024-09-24 23:35:26,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:35:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211654402] [2024-09-24 23:35:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211654402] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:26,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:35:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 25 [2024-09-24 23:35:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858626646] [2024-09-24 23:35:26,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:26,281 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-24 23:35:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-24 23:35:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-09-24 23:35:26,282 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-24 23:35:28,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:28,102 INFO L93 Difference]: Finished difference Result 243 states and 335 transitions. [2024-09-24 23:35:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-24 23:35:28,103 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) Word has length 142 [2024-09-24 23:35:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:28,105 INFO L225 Difference]: With dead ends: 243 [2024-09-24 23:35:28,105 INFO L226 Difference]: Without dead ends: 230 [2024-09-24 23:35:28,106 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-09-24 23:35:28,107 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 68 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:28,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 447 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-24 23:35:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-24 23:35:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2024-09-24 23:35:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 118 states have (on average 1.11864406779661) internal successors, (132), 119 states have internal predecessors, (132), 93 states have call successors, (93), 18 states have call predecessors, (93), 17 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2024-09-24 23:35:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 316 transitions. [2024-09-24 23:35:28,243 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 316 transitions. Word has length 142 [2024-09-24 23:35:28,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:28,243 INFO L474 AbstractCegarLoop]: Abstraction has 229 states and 316 transitions. [2024-09-24 23:35:28,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 22 states have internal predecessors, (50), 9 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 10 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-24 23:35:28,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:28,244 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 316 transitions. [2024-09-24 23:35:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-09-24 23:35:28,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:28,245 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:28,261 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-24 23:35:28,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-24 23:35:28,445 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:28,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1721913771, now seen corresponding path program 3 times [2024-09-24 23:35:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:28,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753771967] [2024-09-24 23:35:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:28,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:35:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:35:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:35:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-24 23:35:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:35:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:35:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-24 23:35:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-24 23:35:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:35:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-24 23:35:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-24 23:35:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-24 23:35:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-24 23:35:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 54 proven. 51 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2024-09-24 23:35:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753771967] [2024-09-24 23:35:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753771967] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:28,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272306804] [2024-09-24 23:35:28,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:35:28,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:28,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:28,801 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:35:28,802 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-24 23:35:28,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:35:28,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:28,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-24 23:35:28,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 121 proven. 62 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2024-09-24 23:35:29,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272306804] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:30,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:35:30,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 21 [2024-09-24 23:35:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79092586] [2024-09-24 23:35:30,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:30,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-24 23:35:30,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-24 23:35:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-09-24 23:35:30,449 INFO L87 Difference]: Start difference. First operand 229 states and 316 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-24 23:35:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:31,634 INFO L93 Difference]: Finished difference Result 339 states and 470 transitions. [2024-09-24 23:35:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-24 23:35:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) Word has length 145 [2024-09-24 23:35:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:31,637 INFO L225 Difference]: With dead ends: 339 [2024-09-24 23:35:31,637 INFO L226 Difference]: Without dead ends: 274 [2024-09-24 23:35:31,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=266, Invalid=1540, Unknown=0, NotChecked=0, Total=1806 [2024-09-24 23:35:31,639 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 44 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:31,639 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 551 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-24 23:35:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-09-24 23:35:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2024-09-24 23:35:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 133 states have (on average 1.112781954887218) internal successors, (148), 134 states have internal predecessors, (148), 105 states have call successors, (105), 21 states have call predecessors, (105), 20 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-09-24 23:35:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2024-09-24 23:35:31,755 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 145 [2024-09-24 23:35:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:31,755 INFO L474 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2024-09-24 23:35:31,755 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 11 states have call predecessors, (37), 13 states have call successors, (37) [2024-09-24 23:35:31,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2024-09-24 23:35:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-24 23:35:31,757 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:31,757 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:31,770 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-24 23:35:31,959 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:31,959 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:31,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1362351366, now seen corresponding path program 3 times [2024-09-24 23:35:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252545532] [2024-09-24 23:35:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-24 23:35:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-24 23:35:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-24 23:35:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-24 23:35:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-24 23:35:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-24 23:35:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-24 23:35:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-24 23:35:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-24 23:35:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-24 23:35:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-24 23:35:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-24 23:35:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-24 23:35:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-24 23:35:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-24 23:35:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-24 23:35:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 102 proven. 24 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2024-09-24 23:35:32,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252545532] [2024-09-24 23:35:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252545532] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202437018] [2024-09-24 23:35:32,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:35:32,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:32,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:32,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:35:32,325 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-24 23:35:32,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-24 23:35:32,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:32,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-24 23:35:32,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 95 proven. 43 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-24 23:35:33,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202437018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:37,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:35:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-24 23:35:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580059175] [2024-09-24 23:35:37,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:37,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-24 23:35:37,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-24 23:35:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=701, Unknown=1, NotChecked=0, Total=812 [2024-09-24 23:35:37,810 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-24 23:35:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:38,398 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2024-09-24 23:35:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:35:38,399 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) Word has length 156 [2024-09-24 23:35:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:38,401 INFO L225 Difference]: With dead ends: 311 [2024-09-24 23:35:38,401 INFO L226 Difference]: Without dead ends: 173 [2024-09-24 23:35:38,402 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=214, Invalid=1045, Unknown=1, NotChecked=0, Total=1260 [2024-09-24 23:35:38,402 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:38,403 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 513 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-24 23:35:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-09-24 23:35:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-09-24 23:35:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 93 states have internal predecessors, (101), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-09-24 23:35:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2024-09-24 23:35:38,496 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 156 [2024-09-24 23:35:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:38,497 INFO L474 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2024-09-24 23:35:38,497 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 19 states have internal predecessors, (48), 14 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 12 states have call predecessors, (41), 13 states have call successors, (41) [2024-09-24 23:35:38,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2024-09-24 23:35:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-09-24 23:35:38,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:35:38,499 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:38,512 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-24 23:35:38,702 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:38,703 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:35:38,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash -593551816, now seen corresponding path program 4 times [2024-09-24 23:35:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:35:38,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241754823] [2024-09-24 23:35:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:35:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:35:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:35:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:35:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:35:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:35:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:35:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:35:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-24 23:35:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:35:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:35:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-24 23:35:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-24 23:35:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-24 23:35:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:35:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:35:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-24 23:35:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:35:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-24 23:35:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-24 23:35:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-24 23:35:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-24 23:35:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-24 23:35:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-24 23:35:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-24 23:35:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-24 23:35:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-24 23:35:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-24 23:35:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-24 23:35:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-24 23:35:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:38,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-24 23:35:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:35:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-24 23:35:39,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:35:39,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241754823] [2024-09-24 23:35:39,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241754823] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:35:39,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261463969] [2024-09-24 23:35:39,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:35:39,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:39,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:35:39,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:35:39,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-24 23:35:39,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:35:39,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:35:39,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-24 23:35:39,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:35:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-09-24 23:35:39,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:35:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 72 proven. 74 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2024-09-24 23:35:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261463969] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:35:39,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:35:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-09-24 23:35:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145077197] [2024-09-24 23:35:39,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:35:39,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-24 23:35:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:35:39,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-24 23:35:39,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:35:39,430 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-24 23:35:39,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:35:39,678 INFO L93 Difference]: Finished difference Result 177 states and 232 transitions. [2024-09-24 23:35:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-24 23:35:39,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 170 [2024-09-24 23:35:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:35:39,681 INFO L225 Difference]: With dead ends: 177 [2024-09-24 23:35:39,681 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:35:39,682 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 389 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-09-24 23:35:39,682 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:35:39,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 541 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:35:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:35:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:35:39,685 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) [2024-09-24 23:35:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:35:39,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2024-09-24 23:35:39,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:35:39,685 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:35:39,686 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 14 states have internal predecessors, (48), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-09-24 23:35:39,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:35:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:35:39,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:35:39,692 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:35:39,706 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-24 23:35:39,893 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:35:39,896 INFO L408 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:35:39,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:35:44,364 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:35:44,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:35:44 BoogieIcfgContainer [2024-09-24 23:35:44,403 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:35:44,403 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:35:44,403 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:35:44,403 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:35:44,403 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:34:49" (3/4) ... [2024-09-24 23:35:44,405 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:35:44,463 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:35:44,463 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:35:44,464 INFO L158 Benchmark]: Toolchain (without parser) took 55904.32ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 143.0MB in the beginning and 209.9MB in the end (delta: -67.0MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,464 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 180.4MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:35:44,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.29ms. Allocated memory is still 180.4MB. Free memory was 142.8MB in the beginning and 139.9MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.12ms. Allocated memory is still 180.4MB. Free memory was 139.9MB in the beginning and 139.0MB in the end (delta: 904.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:35:44,466 INFO L158 Benchmark]: Boogie Preprocessor took 36.10ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 137.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,467 INFO L158 Benchmark]: RCFGBuilder took 338.21ms. Allocated memory is still 180.4MB. Free memory was 137.0MB in the beginning and 146.4MB in the end (delta: -9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,467 INFO L158 Benchmark]: TraceAbstraction took 55169.71ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 145.5MB in the beginning and 213.1MB in the end (delta: -67.5MB). Peak memory consumption was 162.0MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,467 INFO L158 Benchmark]: Witness Printer took 60.34ms. Allocated memory is still 262.1MB. Free memory was 213.1MB in the beginning and 209.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:35:44,468 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 180.4MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.29ms. Allocated memory is still 180.4MB. Free memory was 142.8MB in the beginning and 139.9MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.12ms. Allocated memory is still 180.4MB. Free memory was 139.9MB in the beginning and 139.0MB in the end (delta: 904.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.10ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 137.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.21ms. Allocated memory is still 180.4MB. Free memory was 137.0MB in the beginning and 146.4MB in the end (delta: -9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 55169.71ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 145.5MB in the beginning and 213.1MB in the end (delta: -67.5MB). Peak memory consumption was 162.0MB. Max. memory is 16.1GB. * Witness Printer took 60.34ms. Allocated memory is still 262.1MB. Free memory was 213.1MB in the beginning and 209.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 13]: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.6s, OverallIterations: 20, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 676 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 6250 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5346 mSDsCounter, 702 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4957 IncrementalHoareTripleChecker+Invalid, 5659 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 702 mSolverCounterUnsat, 904 mSDtfsCounter, 4957 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3482 GetRequests, 3081 SyntacticMatches, 31 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=18, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 118 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 31.5s InterpolantComputationTime, 3647 NumberOfCodeBlocks, 3463 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3806 ConstructedInterpolants, 0 QuantifiedInterpolants, 13359 SizeOfPredicates, 52 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 460 ConjunctsInUnsatCore, 37 InterpolantComputations, 5 PerfectInterpolantSequences, 13865/14731 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: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((r == 0) && (s == 1)) && (a == ((__int128) c + b))) && (0 <= c)) && (b == y)) && (k == 1)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1)) || ((((((((((((((r == 0) && (a == (c + ((__int128) b * k)))) && (s == 1)) && (1 <= a)) && (0 <= c)) && (yy == ((long long) y * y))) && ((c + ((__int128) b * 2)) <= 2)) && (q == 0)) && (1 <= b)) && (xy == ((long long) y * x))) && (a == x)) && (x == (c + ((__int128) k * y)))) && (x <= 2)) && (p == 1))) || ((((((((((((((r == 0) && (y <= 2)) && (k == 0)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (c == x)) && (x <= 2)) && (p == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (k == 0)) && (2 == xy)) && (r == 1)) && (c == 2)) && (x == 1)) && (yy == 4)) && (a == 2)) && (q == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 1)) && (a == 2)) && (q == 1)) && (c == 1))) || ((((((((((((y == 2) && (b == 1)) && (s == 0)) && (p == 0)) && (2 == xy)) && (r == 1)) && (x == 1)) && (yy == 4)) && (k == 2)) && (a == 2)) && (c == 0)) && (q == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (s == 0)) && (p == 0)) && (y == xy)) && (r == 1)) && (a == y)) && (x == 1)) && (yy == ((long long) y * y))) && (a == 2)) && (q == 1)) || (((((((((1 <= x) && (y <= 2)) && (b == 0)) && (p == 0)) && (r == 1)) && (a == y)) && (1 <= y)) && ((((__int128) q * x) + ((__int128) y * s)) == 0)) && (x <= 2))) || ((((((((((((r == 0) && (y <= 2)) && (s == 1)) && (1 <= a)) && (b == y)) && (yy == ((long long) y * y))) && (q == 0)) && (1 <= y)) && (xy == ((long long) y * x))) && (a == x)) && (x <= 2)) && (p == 1))) || (((((((((((long long) x + 1) <= y) && (r == 0)) && (((__int128) ((long long) x * 2) + b) == y)) && (y <= 2)) && (s == 1)) && (((__int128) q + 2) == 0)) && (((__int128) b + 1) <= x)) && (a == x)) && (p == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:35:44,500 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE