./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.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 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 02:10:11,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 02:10:11,775 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 02:10:11,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 02:10:11,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 02:10:11,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 02:10:11,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 02:10:11,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 02:10:11,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 02:10:11,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 02:10:11,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 02:10:11,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 02:10:11,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 02:10:11,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 02:10:11,810 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 02:10:11,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 02:10:11,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 02:10:11,811 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 02:10:11,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 02:10:11,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 02:10:11,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 02:10:11,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 02:10:11,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 02:10:11,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 02:10:11,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 02:10:11,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 02:10:11,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 02:10:11,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 02:10:11,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 02:10:11,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 02:10:11,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 02:10:11,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 02:10:11,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:10:11,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 02:10:11,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 02:10:11,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 02:10:11,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 02:10:11,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 02:10:11,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 02:10:11,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 02:10:11,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 02:10:11,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 02:10:11,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63cd3e528fa28694be9f2ecbe948122395c3f48db5408253e949dc50f2a74038 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 02:10:12,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 02:10:12,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 02:10:12,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 02:10:12,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 02:10:12,098 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 02:10:12,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-13 02:10:13,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 02:10:13,676 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 02:10:13,677 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c [2024-09-13 02:10:13,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3ec720254/8cf53396671c4afaa31803b1a14f712c/FLAG01760cb8b [2024-09-13 02:10:14,087 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3ec720254/8cf53396671c4afaa31803b1a14f712c [2024-09-13 02:10:14,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 02:10:14,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 02:10:14,092 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 02:10:14,092 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 02:10:14,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 02:10:14,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3caed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14, skipping insertion in model container [2024-09-13 02:10:14,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 02:10:14,262 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] [2024-09-13 02:10:14,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:10:14,294 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 02:10:14,306 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound50.c[526,539] [2024-09-13 02:10:14,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 02:10:14,335 INFO L204 MainTranslator]: Completed translation [2024-09-13 02:10:14,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14 WrapperNode [2024-09-13 02:10:14,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 02:10:14,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 02:10:14,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 02:10:14,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 02:10:14,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,358 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 02:10:14,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 02:10:14,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 02:10:14,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 02:10:14,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 02:10:14,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,381 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-13 02:10:14,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 02:10:14,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 02:10:14,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 02:10:14,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 02:10:14,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (1/1) ... [2024-09-13 02:10:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 02:10:14,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:14,428 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) [2024-09-13 02:10:14,431 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 [2024-09-13 02:10:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 02:10:14,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 02:10:14,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 02:10:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 02:10:14,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 02:10:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 02:10:14,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 02:10:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 02:10:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 02:10:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 02:10:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 02:10:14,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 02:10:14,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 02:10:14,555 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 02:10:14,559 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 02:10:14,796 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-13 02:10:14,796 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 02:10:14,824 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 02:10:14,824 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-13 02:10:14,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:10:14 BoogieIcfgContainer [2024-09-13 02:10:14,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 02:10:14,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 02:10:14,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 02:10:14,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 02:10:14,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 02:10:14" (1/3) ... [2024-09-13 02:10:14,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e0e790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:10:14, skipping insertion in model container [2024-09-13 02:10:14,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 02:10:14" (2/3) ... [2024-09-13 02:10:14,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e0e790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 02:10:14, skipping insertion in model container [2024-09-13 02:10:14,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:10:14" (3/3) ... [2024-09-13 02:10:14,832 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound50.c [2024-09-13 02:10:14,843 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 02:10:14,844 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 02:10:14,886 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 02:10:14,891 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;@108ad6e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 02:10:14,892 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 02:10:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 02:10:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:10:14,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:14,904 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:14,905 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:14,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-13 02:10:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121952373] [2024-09-13 02:10:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:10:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:10:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:10:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121952373] [2024-09-13 02:10:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121952373] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:15,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:15,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 02:10:15,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132721623] [2024-09-13 02:10:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:15,078 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 02:10:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 02:10:15,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:10:15,098 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:10:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:15,129 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-13 02:10:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 02:10:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:10:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:15,138 INFO L225 Difference]: With dead ends: 58 [2024-09-13 02:10:15,138 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 02:10:15,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 02:10:15,144 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:15,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:10:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 02:10:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-13 02:10:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:10:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-13 02:10:15,183 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-13 02:10:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:15,183 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-13 02:10:15,183 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:10:15,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-13 02:10:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-13 02:10:15,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:15,185 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:15,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 02:10:15,186 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:15,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-13 02:10:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26134964] [2024-09-13 02:10:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:10:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:10:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:10:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26134964] [2024-09-13 02:10:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26134964] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:15,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:10:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884996974] [2024-09-13 02:10:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:15,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:15,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:10:15,359 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:10:15,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:15,440 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-13 02:10:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:15,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-13 02:10:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:15,442 INFO L225 Difference]: With dead ends: 42 [2024-09-13 02:10:15,442 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 02:10:15,442 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:10:15,443 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:15,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:10:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 02:10:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-13 02:10:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:10:15,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-13 02:10:15,460 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-13 02:10:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:15,461 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-13 02:10:15,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 02:10:15,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-13 02:10:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-13 02:10:15,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:15,464 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:15,465 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 02:10:15,465 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:15,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-13 02:10:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882992732] [2024-09-13 02:10:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:10:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:10:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:10:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 02:10:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882992732] [2024-09-13 02:10:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882992732] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:10:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285826797] [2024-09-13 02:10:15,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:15,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:15,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:10:15,684 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:10:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:15,772 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-13 02:10:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-13 02:10:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:15,775 INFO L225 Difference]: With dead ends: 46 [2024-09-13 02:10:15,777 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 02:10:15,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:10:15,778 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:15,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:10:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 02:10:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-13 02:10:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 02:10:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-13 02:10:15,796 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-13 02:10:15,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:15,797 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-13 02:10:15,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 02:10:15,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-13 02:10:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 02:10:15,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:15,803 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:15,803 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 02:10:15,804 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:15,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-13 02:10:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107301438] [2024-09-13 02:10:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:15,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368948514] [2024-09-13 02:10:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:15,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:15,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:15,835 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) [2024-09-13 02:10:15,837 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 02:10:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:15,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 02:10:15,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 02:10:16,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:10:16,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:16,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107301438] [2024-09-13 02:10:16,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:16,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368948514] [2024-09-13 02:10:16,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368948514] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:16,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:16,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:10:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705924116] [2024-09-13 02:10:16,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:16,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:16,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:10:16,021 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:10:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:16,101 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-13 02:10:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-13 02:10:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:16,103 INFO L225 Difference]: With dead ends: 63 [2024-09-13 02:10:16,103 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 02:10:16,104 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:10:16,104 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:16,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:10:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 02:10:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 02:10:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 02:10:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-13 02:10:16,129 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-13 02:10:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:16,129 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-13 02:10:16,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 02:10:16,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-13 02:10:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-13 02:10:16,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:16,131 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:16,150 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 02:10:16,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:16,337 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:16,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-13 02:10:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472858579] [2024-09-13 02:10:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424516197] [2024-09-13 02:10:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:16,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:16,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:16,365 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) [2024-09-13 02:10:16,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 02:10:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:16,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:10:16,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 02:10:16,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 02:10:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472858579] [2024-09-13 02:10:16,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:16,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424516197] [2024-09-13 02:10:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424516197] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:10:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030725977] [2024-09-13 02:10:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:16,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:10:16,539 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:10:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:16,619 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-13 02:10:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-13 02:10:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:16,621 INFO L225 Difference]: With dead ends: 63 [2024-09-13 02:10:16,621 INFO L226 Difference]: Without dead ends: 61 [2024-09-13 02:10:16,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:10:16,622 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:16,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:10:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-13 02:10:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-13 02:10:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 02:10:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-13 02:10:16,643 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-13 02:10:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:16,643 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-13 02:10:16,644 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:10:16,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-13 02:10:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-13 02:10:16,646 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:16,647 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:16,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 02:10:16,850 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:16,851 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:16,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-13 02:10:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403349054] [2024-09-13 02:10:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:16,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35895780] [2024-09-13 02:10:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:16,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:16,871 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) [2024-09-13 02:10:16,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 02:10:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:16,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 02:10:16,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-13 02:10:17,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:10:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-13 02:10:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403349054] [2024-09-13 02:10:17,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35895780] [2024-09-13 02:10:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35895780] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 02:10:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:10:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-13 02:10:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32901462] [2024-09-13 02:10:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:17,176 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-13 02:10:17,177 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:10:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:17,250 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-13 02:10:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:17,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-13 02:10:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:17,253 INFO L225 Difference]: With dead ends: 70 [2024-09-13 02:10:17,254 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 02:10:17,254 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-13 02:10:17,257 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:17,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:10:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 02:10:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-13 02:10:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-13 02:10:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-13 02:10:17,279 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-13 02:10:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:17,279 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-13 02:10:17,279 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 02:10:17,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-13 02:10:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-13 02:10:17,280 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:17,281 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:17,297 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 02:10:17,481 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 02:10:17,481 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:17,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-13 02:10:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217835121] [2024-09-13 02:10:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:10:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:10:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:10:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:10:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:10:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:10:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:10:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-13 02:10:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-13 02:10:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217835121] [2024-09-13 02:10:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217835121] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 02:10:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 02:10:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 02:10:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119127374] [2024-09-13 02:10:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 02:10:17,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 02:10:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 02:10:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 02:10:17,652 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-13 02:10:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:17,709 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-13 02:10:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 02:10:17,709 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 [2024-09-13 02:10:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:17,714 INFO L225 Difference]: With dead ends: 75 [2024-09-13 02:10:17,714 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 02:10:17,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 02:10:17,715 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:17,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 02:10:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 02:10:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-13 02:10:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 02:10:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-13 02:10:17,737 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-13 02:10:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:17,738 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-13 02:10:17,738 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) [2024-09-13 02:10:17,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-13 02:10:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-13 02:10:17,742 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:17,742 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:17,743 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 02:10:17,743 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:17,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-13 02:10:17,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793299074] [2024-09-13 02:10:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:17,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:17,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209255529] [2024-09-13 02:10:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:17,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:17,771 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) [2024-09-13 02:10:17,773 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 02:10:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:17,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-13 02:10:17,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 02:10:18,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:10:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-13 02:10:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793299074] [2024-09-13 02:10:19,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209255529] [2024-09-13 02:10:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209255529] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:10:19,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:10:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-13 02:10:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772186628] [2024-09-13 02:10:19,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:10:19,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 02:10:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 02:10:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:10:19,518 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-13 02:10:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:20,119 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-13 02:10:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 02:10:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-13 02:10:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:20,121 INFO L225 Difference]: With dead ends: 138 [2024-09-13 02:10:20,121 INFO L226 Difference]: Without dead ends: 115 [2024-09-13 02:10:20,122 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-13 02:10:20,122 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:20,123 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 02:10:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-13 02:10:20,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-13 02:10:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-13 02:10:20,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-13 02:10:20,161 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-13 02:10:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:20,161 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-13 02:10:20,161 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-13 02:10:20,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-13 02:10:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-13 02:10:20,163 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:20,163 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:20,181 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 02:10:20,367 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:20,368 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:20,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-13 02:10:20,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:20,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508805210] [2024-09-13 02:10:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:20,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856658264] [2024-09-13 02:10:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:20,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:20,395 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) [2024-09-13 02:10:20,396 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 02:10:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:20,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 02:10:20,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 02:10:20,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:10:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-13 02:10:21,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508805210] [2024-09-13 02:10:21,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856658264] [2024-09-13 02:10:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856658264] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:10:21,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:10:21,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-13 02:10:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347324428] [2024-09-13 02:10:21,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:10:21,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:10:21,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:10:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-13 02:10:21,229 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-13 02:10:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:21,962 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-13 02:10:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 02:10:21,962 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-13 02:10:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:21,965 INFO L225 Difference]: With dead ends: 168 [2024-09-13 02:10:21,965 INFO L226 Difference]: Without dead ends: 136 [2024-09-13 02:10:21,965 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-13 02:10:21,966 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:21,968 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 02:10:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-13 02:10:22,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-13 02:10:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-13 02:10:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-13 02:10:22,013 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-13 02:10:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:22,013 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-13 02:10:22,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-13 02:10:22,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-13 02:10:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-13 02:10:22,016 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:22,016 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:22,034 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 02:10:22,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:22,217 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:22,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-13 02:10:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610720911] [2024-09-13 02:10:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:10:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:10:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:10:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:10:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:10:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:10:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:10:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:10:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:10:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:10:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-13 02:10:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 02:10:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-13 02:10:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:10:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610720911] [2024-09-13 02:10:22,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610720911] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:10:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245523007] [2024-09-13 02:10:22,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:22,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:22,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:22,615 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) [2024-09-13 02:10:22,617 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 02:10:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:10:22,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 02:10:22,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:10:22,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:10:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-13 02:10:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245523007] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:10:23,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:10:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-13 02:10:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534675027] [2024-09-13 02:10:23,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:10:23,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 02:10:23,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 02:10:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 02:10:23,172 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-13 02:10:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:10:23,377 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-13 02:10:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 02:10:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-13 02:10:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:10:23,379 INFO L225 Difference]: With dead ends: 129 [2024-09-13 02:10:23,379 INFO L226 Difference]: Without dead ends: 100 [2024-09-13 02:10:23,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:10:23,380 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:10:23,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:10:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-13 02:10:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-13 02:10:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-13 02:10:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-13 02:10:23,411 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-13 02:10:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:10:23,412 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-13 02:10:23,412 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-13 02:10:23,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:23,413 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-13 02:10:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-13 02:10:23,414 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:10:23,414 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:10:23,429 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 02:10:23,618 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 02:10:23,619 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:10:23,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:10:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-13 02:10:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:10:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76304369] [2024-09-13 02:10:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:10:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:10:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:10:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398888161] [2024-09-13 02:10:23,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:10:23,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:10:23,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:10:23,648 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) [2024-09-13 02:10:23,651 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 02:10:23,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:10:23,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:10:23,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-13 02:10:23,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:10:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 02:10:24,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:10:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-13 02:10:40,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:10:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76304369] [2024-09-13 02:10:40,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:10:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398888161] [2024-09-13 02:10:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398888161] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:10:40,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:10:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-13 02:10:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901069353] [2024-09-13 02:10:40,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:10:40,576 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-13 02:10:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:10:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-13 02:10:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-13 02:10:40,577 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-13 02:10:51,282 WARN L293 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 02:10:52,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:10:54,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:10:58,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:10:59,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:11:01,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:11:12,674 WARN L293 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-13 02:11:15,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 02:11:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:15,105 INFO L93 Difference]: Finished difference Result 205 states and 268 transitions. [2024-09-13 02:11:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-13 02:11:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-13 02:11:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:15,107 INFO L225 Difference]: With dead ends: 205 [2024-09-13 02:11:15,107 INFO L226 Difference]: Without dead ends: 172 [2024-09-13 02:11:15,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-13 02:11:15,109 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:15,109 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-09-13 02:11:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-09-13 02:11:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2024-09-13 02:11:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 107 states have internal predecessors, (117), 52 states have call successors, (52), 17 states have call predecessors, (52), 16 states have return successors, (50), 43 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-13 02:11:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 219 transitions. [2024-09-13 02:11:15,167 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 219 transitions. Word has length 93 [2024-09-13 02:11:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:15,168 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 219 transitions. [2024-09-13 02:11:15,168 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-13 02:11:15,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 219 transitions. [2024-09-13 02:11:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-13 02:11:15,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:11:15,170 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:15,184 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 02:11:15,371 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:15,371 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:11:15,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-13 02:11:15,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:11:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236576246] [2024-09-13 02:11:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:11:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:11:15,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020505570] [2024-09-13 02:11:15,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:11:15,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:11:15,405 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) [2024-09-13 02:11:15,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 02:11:15,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:11:15,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:11:15,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-13 02:11:15,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:11:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 02:11:15,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:11:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-13 02:11:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:11:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236576246] [2024-09-13 02:11:18,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:11:18,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020505570] [2024-09-13 02:11:18,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020505570] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:11:18,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:11:18,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-13 02:11:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118634949] [2024-09-13 02:11:18,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:11:18,188 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 02:11:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:11:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 02:11:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-13 02:11:18,190 INFO L87 Difference]: Start difference. First operand 168 states and 219 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-13 02:11:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:21,539 INFO L93 Difference]: Finished difference Result 238 states and 312 transitions. [2024-09-13 02:11:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 02:11:21,540 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-13 02:11:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:21,542 INFO L225 Difference]: With dead ends: 238 [2024-09-13 02:11:21,542 INFO L226 Difference]: Without dead ends: 175 [2024-09-13 02:11:21,543 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-13 02:11:21,543 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:21,543 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 575 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-09-13 02:11:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-09-13 02:11:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2024-09-13 02:11:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 97 states have internal predecessors, (102), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-13 02:11:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2024-09-13 02:11:21,604 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 104 [2024-09-13 02:11:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:21,604 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2024-09-13 02:11:21,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-13 02:11:21,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2024-09-13 02:11:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 02:11:21,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:11:21,606 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:21,622 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 02:11:21,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:21,811 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:11:21,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-13 02:11:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:11:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816389206] [2024-09-13 02:11:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:11:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:11:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:11:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:11:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:11:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:11:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:11:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:11:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:11:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:11:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:11:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 02:11:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 02:11:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 02:11:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-13 02:11:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-13 02:11:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-13 02:11:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-13 02:11:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-13 02:11:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-13 02:11:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:11:22,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816389206] [2024-09-13 02:11:22,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816389206] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:11:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959644040] [2024-09-13 02:11:22,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 02:11:22,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:22,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:11:22,240 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) [2024-09-13 02:11:22,242 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 02:11:22,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 02:11:22,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:11:22,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-13 02:11:22,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:11:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 02:11:22,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:11:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-13 02:11:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959644040] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:11:23,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:11:23,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-13 02:11:23,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000284563] [2024-09-13 02:11:23,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:11:23,682 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 02:11:23,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:11:23,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 02:11:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-13 02:11:23,683 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-13 02:11:24,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:24,127 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2024-09-13 02:11:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 02:11:24,128 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-13 02:11:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:24,129 INFO L225 Difference]: With dead ends: 171 [2024-09-13 02:11:24,130 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 02:11:24,130 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-13 02:11:24,131 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 19 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:24,131 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 407 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 02:11:24,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 02:11:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-09-13 02:11:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 83 states have internal predecessors, (86), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-13 02:11:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2024-09-13 02:11:24,181 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 109 [2024-09-13 02:11:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:24,181 INFO L474 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2024-09-13 02:11:24,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-13 02:11:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2024-09-13 02:11:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-13 02:11:24,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:11:24,184 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:24,200 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 02:11:24,384 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-13 02:11:24,384 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:11:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-13 02:11:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:11:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532451083] [2024-09-13 02:11:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:11:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 02:11:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 02:11:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 02:11:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 02:11:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 02:11:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 02:11:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-13 02:11:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-13 02:11:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-13 02:11:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 02:11:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 02:11:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-13 02:11:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 02:11:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-13 02:11:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-13 02:11:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-13 02:11:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-13 02:11:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-13 02:11:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-13 02:11:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-13 02:11:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:11:24,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:11:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532451083] [2024-09-13 02:11:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532451083] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:11:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997023250] [2024-09-13 02:11:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:24,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:24,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:11:24,649 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) [2024-09-13 02:11:24,651 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 02:11:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 02:11:24,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 02:11:24,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:11:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:11:24,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:11:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 02:11:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997023250] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:11:24,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 02:11:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-13 02:11:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277344178] [2024-09-13 02:11:24,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 02:11:24,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 02:11:24,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:11:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 02:11:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 02:11:24,956 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-13 02:11:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:25,107 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2024-09-13 02:11:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 02:11:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-13 02:11:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:25,110 INFO L225 Difference]: With dead ends: 138 [2024-09-13 02:11:25,110 INFO L226 Difference]: Without dead ends: 131 [2024-09-13 02:11:25,110 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-13 02:11:25,111 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:25,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:11:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-13 02:11:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-13 02:11:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.103896103896104) internal successors, (85), 81 states have internal predecessors, (85), 32 states have call successors, (32), 17 states have call predecessors, (32), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 02:11:25,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2024-09-13 02:11:25,169 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 121 [2024-09-13 02:11:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:25,170 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2024-09-13 02:11:25,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-13 02:11:25,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2024-09-13 02:11:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 02:11:25,172 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:11:25,172 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:25,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 02:11:25,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 02:11:25,377 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:11:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1692740848, now seen corresponding path program 3 times [2024-09-13 02:11:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:11:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861458757] [2024-09-13 02:11:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:11:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:11:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811827126] [2024-09-13 02:11:25,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:11:25,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:11:25,405 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) [2024-09-13 02:11:25,406 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 02:11:25,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 02:11:25,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:11:25,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-13 02:11:25,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:11:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 156 proven. 44 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2024-09-13 02:11:25,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:11:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:11:27,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861458757] [2024-09-13 02:11:27,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:11:27,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811827126] [2024-09-13 02:11:27,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811827126] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 02:11:27,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-13 02:11:27,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-09-13 02:11:27,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500483353] [2024-09-13 02:11:27,109 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-13 02:11:27,109 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 02:11:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:11:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 02:11:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-09-13 02:11:27,110 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 02:11:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:27,287 INFO L93 Difference]: Finished difference Result 132 states and 152 transitions. [2024-09-13 02:11:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 02:11:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2024-09-13 02:11:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:27,288 INFO L225 Difference]: With dead ends: 132 [2024-09-13 02:11:27,288 INFO L226 Difference]: Without dead ends: 128 [2024-09-13 02:11:27,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-09-13 02:11:27,289 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:27,289 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:11:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-13 02:11:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-13 02:11:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 82 states have internal predecessors, (86), 32 states have call successors, (32), 18 states have call predecessors, (32), 16 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-13 02:11:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2024-09-13 02:11:27,348 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 123 [2024-09-13 02:11:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:27,349 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2024-09-13 02:11:27,349 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-13 02:11:27,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2024-09-13 02:11:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-13 02:11:27,350 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 02:11:27,351 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:27,368 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 02:11:27,554 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-13 02:11:27,555 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 02:11:27,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-13 02:11:27,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 02:11:27,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349925195] [2024-09-13 02:11:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 02:11:27,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 02:11:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 02:11:27,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984147847] [2024-09-13 02:11:27,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 02:11:27,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 02:11:27,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 02:11:27,608 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) [2024-09-13 02:11:27,609 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 02:11:27,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-13 02:11:27,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 02:11:27,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 02:11:27,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 02:11:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-13 02:11:27,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 02:11:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-13 02:11:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 02:11:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349925195] [2024-09-13 02:11:27,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 02:11:27,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984147847] [2024-09-13 02:11:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984147847] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 02:11:27,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 02:11:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-13 02:11:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995266744] [2024-09-13 02:11:27,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 02:11:27,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-13 02:11:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 02:11:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-13 02:11:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-13 02:11:27,986 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-13 02:11:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 02:11:28,223 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2024-09-13 02:11:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-13 02:11:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-13 02:11:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 02:11:28,224 INFO L225 Difference]: With dead ends: 128 [2024-09-13 02:11:28,224 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 02:11:28,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-13 02:11:28,225 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 02:11:28,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 181 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 02:11:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 02:11:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 02:11:28,226 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) [2024-09-13 02:11:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 02:11:28,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-13 02:11:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 02:11:28,227 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 02:11:28,227 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-13 02:11:28,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 02:11:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 02:11:28,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 02:11:28,232 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 02:11:28,249 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-13 02:11:28,433 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-13 02:11:28,436 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 02:11:28,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 02:11:30,920 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 02:11:30,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 02:11:30 BoogieIcfgContainer [2024-09-13 02:11:30,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 02:11:30,934 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 02:11:30,934 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 02:11:30,934 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 02:11:30,935 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 02:10:14" (3/4) ... [2024-09-13 02:11:30,936 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 02:11:30,939 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 02:11:30,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-09-13 02:11:30,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 02:11:30,940 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-13 02:11:30,943 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-13 02:11:30,943 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-09-13 02:11:30,943 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 02:11:30,943 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 02:11:30,943 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 02:11:31,022 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 02:11:31,023 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 02:11:31,023 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 02:11:31,024 INFO L158 Benchmark]: Toolchain (without parser) took 76932.55ms. Allocated memory was 165.7MB in the beginning and 299.9MB in the end (delta: 134.2MB). Free memory was 116.3MB in the beginning and 130.6MB in the end (delta: -14.4MB). Peak memory consumption was 119.2MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,024 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 02:11:31,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.37ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 104.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.32ms. Allocated memory is still 165.7MB. Free memory was 104.3MB in the beginning and 103.6MB in the end (delta: 738.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 02:11:31,024 INFO L158 Benchmark]: Boogie Preprocessor took 34.27ms. Allocated memory is still 165.7MB. Free memory was 103.6MB in the beginning and 101.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,025 INFO L158 Benchmark]: RCFGBuilder took 430.96ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 127.5MB in the end (delta: -25.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,025 INFO L158 Benchmark]: TraceAbstraction took 76107.02ms. Allocated memory was 165.7MB in the beginning and 299.9MB in the end (delta: 134.2MB). Free memory was 126.8MB in the beginning and 135.8MB in the end (delta: -9.0MB). Peak memory consumption was 174.1MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,025 INFO L158 Benchmark]: Witness Printer took 88.99ms. Allocated memory is still 299.9MB. Free memory was 135.8MB in the beginning and 130.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 02:11:31,030 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.37ms. Allocated memory is still 165.7MB. Free memory was 116.3MB in the beginning and 104.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.32ms. Allocated memory is still 165.7MB. Free memory was 104.3MB in the beginning and 103.6MB in the end (delta: 738.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.27ms. Allocated memory is still 165.7MB. Free memory was 103.6MB in the beginning and 101.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.96ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 127.5MB in the end (delta: -25.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 76107.02ms. Allocated memory was 165.7MB in the beginning and 299.9MB in the end (delta: 134.2MB). Free memory was 126.8MB in the beginning and 135.8MB in the end (delta: -9.0MB). Peak memory consumption was 174.1MB. Max. memory is 16.1GB. * Witness Printer took 88.99ms. Allocated memory is still 299.9MB. Free memory was 135.8MB in the beginning and 130.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.6s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 332 SdHoareTripleChecker+Valid, 15.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 3304 SdHoareTripleChecker+Invalid, 15.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2763 mSDsCounter, 411 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2692 IncrementalHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 411 mSolverCounterUnsat, 541 mSDtfsCounter, 2692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2032 GetRequests, 1824 SyntacticMatches, 10 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=11, InterpolantAutomatonStates: 152, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 77 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 28.2s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 1979 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2205 ConstructedInterpolants, 0 QuantifiedInterpolants, 21011 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2233 ConjunctsInSsa, 322 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 8805/9435 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((A == (q + r)) && (d == p)) && (1 <= p)) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((A == r) && ((A + d) == (p + r))) && (8 <= p)) && (q == 0)) && (B == 1))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-13 02:11:31,110 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE