./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/EvenOdd01-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:08:55,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:08:55,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:08:55,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:08:55,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:08:55,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:08:55,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:08:55,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:08:55,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:08:55,985 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:08:55,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:08:55,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:08:55,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:08:55,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:08:55,991 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:08:55,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:08:55,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:08:55,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:08:55,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:08:55,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:08:55,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:08:55,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:08:55,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:08:55,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:08:55,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:08:55,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:08:55,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:08:55,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:08:55,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:08:55,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:08:55,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:08:55,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:08:55,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:08:55,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:08:55,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:08:55,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:08:55,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:08:55,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:08:55,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:08:55,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:08:55,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:08:55,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:08:55,999 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:08:56,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:08:56,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:08:56,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:08:56,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:08:56,291 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:08:56,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-10-15 15:08:57,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:08:57,855 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:08:57,855 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c [2024-10-15 15:08:57,862 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5e8920299/a31d57b360b3444384999f51ec16f2d8/FLAG36945771f [2024-10-15 15:08:57,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5e8920299/a31d57b360b3444384999f51ec16f2d8 [2024-10-15 15:08:57,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:08:57,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:08:57,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:08:57,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:08:57,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:08:57,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:57" (1/1) ... [2024-10-15 15:08:57,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2dfecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:57, skipping insertion in model container [2024-10-15 15:08:57,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:57" (1/1) ... [2024-10-15 15:08:57,906 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:08:58,112 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-10-15 15:08:58,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:08:58,129 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:08:58,145 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/EvenOdd01-1.c[975,988] [2024-10-15 15:08:58,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:08:58,163 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:08:58,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58 WrapperNode [2024-10-15 15:08:58,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:08:58,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:08:58,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:08:58,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:08:58,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,184 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:08:58,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:08:58,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:08:58,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:08:58,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:08:58,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,221 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 15:08:58,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:08:58,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:08:58,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:08:58,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:08:58,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (1/1) ... [2024-10-15 15:08:58,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:08:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:08:58,276 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) [2024-10-15 15:08:58,279 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 [2024-10-15 15:08:58,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:08:58,324 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2024-10-15 15:08:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2024-10-15 15:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:08:58,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:08:58,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:08:58,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2024-10-15 15:08:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2024-10-15 15:08:58,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:08:58,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:08:58,383 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:08:58,385 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:08:58,525 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-15 15:08:58,526 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:08:58,559 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:08:58,560 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:08:58,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:58 BoogieIcfgContainer [2024-10-15 15:08:58,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:08:58,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:08:58,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:08:58,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:08:58,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:57" (1/3) ... [2024-10-15 15:08:58,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a4b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:58, skipping insertion in model container [2024-10-15 15:08:58,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:58" (2/3) ... [2024-10-15 15:08:58,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a4b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:58, skipping insertion in model container [2024-10-15 15:08:58,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:58" (3/3) ... [2024-10-15 15:08:58,584 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2024-10-15 15:08:58,633 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:08:58,633 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:08:58,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:08:58,691 INFO L333 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;@6f88a858, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:08:58,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:08:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:08:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-15 15:08:58,708 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:08:58,709 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:08:58,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:08:58,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:08:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1991504062, now seen corresponding path program 1 times [2024-10-15 15:08:58,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:08:58,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985122284] [2024-10-15 15:08:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:08:58,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:08:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:08:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:08:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:08:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:08:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985122284] [2024-10-15 15:08:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985122284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:08:59,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:08:59,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-15 15:08:59,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091638488] [2024-10-15 15:08:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:08:59,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 15:08:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:08:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 15:08:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:08:59,339 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:08:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:08:59,437 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-10-15 15:08:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 15:08:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-10-15 15:08:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:08:59,448 INFO L225 Difference]: With dead ends: 41 [2024-10-15 15:08:59,448 INFO L226 Difference]: Without dead ends: 29 [2024-10-15 15:08:59,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:08:59,454 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:08:59,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:08:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-15 15:08:59,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-10-15 15:08:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-15 15:08:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-10-15 15:08:59,486 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2024-10-15 15:08:59,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:08:59,487 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-10-15 15:08:59,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:08:59,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:08:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-10-15 15:08:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-15 15:08:59,489 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:08:59,490 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:08:59,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:08:59,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:08:59,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:08:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1940222656, now seen corresponding path program 1 times [2024-10-15 15:08:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:08:59,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181533340] [2024-10-15 15:08:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:08:59,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:08:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:08:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:08:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:08:59,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:08:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181533340] [2024-10-15 15:08:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181533340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:08:59,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:08:59,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-15 15:08:59,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451804483] [2024-10-15 15:08:59,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:08:59,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-15 15:08:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:08:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-15 15:08:59,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:08:59,778 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:08:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:08:59,863 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-10-15 15:08:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 15:08:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-10-15 15:08:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:08:59,865 INFO L225 Difference]: With dead ends: 33 [2024-10-15 15:08:59,865 INFO L226 Difference]: Without dead ends: 29 [2024-10-15 15:08:59,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-15 15:08:59,867 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:08:59,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:08:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-15 15:08:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-10-15 15:08:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-15 15:08:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-10-15 15:08:59,879 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2024-10-15 15:08:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:08:59,879 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-10-15 15:08:59,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:08:59,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:08:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-10-15 15:08:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 15:08:59,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:08:59,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:08:59,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 15:08:59,882 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:08:59,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:08:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2009952378, now seen corresponding path program 1 times [2024-10-15 15:08:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:08:59,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027452211] [2024-10-15 15:08:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:08:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:08:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:08:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:08:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:08:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:08:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:08:59,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:08:59,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027452211] [2024-10-15 15:08:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027452211] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:08:59,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:08:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:08:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344501940] [2024-10-15 15:08:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:08:59,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:08:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:08:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:08:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:08:59,986 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:09:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:00,017 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-10-15 15:09:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:09:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-10-15 15:09:00,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:00,019 INFO L225 Difference]: With dead ends: 41 [2024-10-15 15:09:00,019 INFO L226 Difference]: Without dead ends: 29 [2024-10-15 15:09:00,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:09:00,021 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:00,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:09:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-15 15:09:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-10-15 15:09:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-15 15:09:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-10-15 15:09:00,029 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2024-10-15 15:09:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:00,029 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-10-15 15:09:00,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:09:00,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-10-15 15:09:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-15 15:09:00,033 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:00,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:00,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 15:09:00,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:00,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash 380134900, now seen corresponding path program 1 times [2024-10-15 15:09:00,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:00,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259533021] [2024-10-15 15:09:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:00,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:09:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259533021] [2024-10-15 15:09:00,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259533021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:09:00,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:09:00,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-15 15:09:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032423997] [2024-10-15 15:09:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:09:00,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-15 15:09:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-15 15:09:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-15 15:09:00,332 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:09:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:00,450 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-10-15 15:09:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 15:09:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-10-15 15:09:00,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:00,452 INFO L225 Difference]: With dead ends: 36 [2024-10-15 15:09:00,452 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:09:00,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:09:00,456 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:00,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:09:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:09:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:09:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-15 15:09:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-10-15 15:09:00,469 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2024-10-15 15:09:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:00,469 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-10-15 15:09:00,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-15 15:09:00,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-10-15 15:09:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 15:09:00,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:00,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:00,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 15:09:00,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:00,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1592992894, now seen corresponding path program 1 times [2024-10-15 15:09:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016452495] [2024-10-15 15:09:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:09:00,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:00,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016452495] [2024-10-15 15:09:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016452495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:09:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:09:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:09:00,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423979333] [2024-10-15 15:09:00,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:09:00,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:09:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:09:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:09:00,577 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:09:00,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:00,623 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2024-10-15 15:09:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:09:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-10-15 15:09:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:00,626 INFO L225 Difference]: With dead ends: 44 [2024-10-15 15:09:00,626 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 15:09:00,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:09:00,628 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:00,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 15:09:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 15:09:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-10-15 15:09:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-15 15:09:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-10-15 15:09:00,640 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2024-10-15 15:09:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:00,641 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-10-15 15:09:00,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-15 15:09:00,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-10-15 15:09:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-15 15:09:00,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:00,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:00,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 15:09:00,644 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:00,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2012013244, now seen corresponding path program 1 times [2024-10-15 15:09:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:00,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717677153] [2024-10-15 15:09:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:00,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:01,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:09:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717677153] [2024-10-15 15:09:01,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717677153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:01,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208064327] [2024-10-15 15:09:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:01,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:01,083 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) [2024-10-15 15:09:01,085 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:09:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:01,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 15:09:01,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 15:09:01,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 15:09:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208064327] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:01,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-10-15 15:09:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515627643] [2024-10-15 15:09:01,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:01,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 15:09:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 15:09:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-10-15 15:09:01,905 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-15 15:09:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:02,134 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-10-15 15:09:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 15:09:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2024-10-15 15:09:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:02,136 INFO L225 Difference]: With dead ends: 42 [2024-10-15 15:09:02,136 INFO L226 Difference]: Without dead ends: 38 [2024-10-15 15:09:02,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2024-10-15 15:09:02,137 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:02,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:09:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-15 15:09:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2024-10-15 15:09:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-15 15:09:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2024-10-15 15:09:02,169 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2024-10-15 15:09:02,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:02,170 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2024-10-15 15:09:02,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.85) internal successors, (37), 16 states have internal predecessors, (37), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-15 15:09:02,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2024-10-15 15:09:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 15:09:02,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:02,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:02,190 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:02,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-15 15:09:02,377 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:02,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash 537295668, now seen corresponding path program 1 times [2024-10-15 15:09:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842101713] [2024-10-15 15:09:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:02,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 15:09:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842101713] [2024-10-15 15:09:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842101713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:02,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950671427] [2024-10-15 15:09:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:02,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:02,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:02,813 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) [2024-10-15 15:09:02,815 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:09:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:02,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-15 15:09:02,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 15:09:02,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 15:09:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950671427] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:03,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:03,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-10-15 15:09:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434619100] [2024-10-15 15:09:03,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:03,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 15:09:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 15:09:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2024-10-15 15:09:03,660 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 15:09:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:03,993 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-10-15 15:09:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 15:09:03,993 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 36 [2024-10-15 15:09:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:03,995 INFO L225 Difference]: With dead ends: 48 [2024-10-15 15:09:03,995 INFO L226 Difference]: Without dead ends: 44 [2024-10-15 15:09:03,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2024-10-15 15:09:03,996 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:03,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 299 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:09:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-15 15:09:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-10-15 15:09:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-15 15:09:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-10-15 15:09:04,006 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2024-10-15 15:09:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:04,006 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-10-15 15:09:04,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 17 states have internal predecessors, (41), 7 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 15:09:04,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-10-15 15:09:04,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-15 15:09:04,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:04,008 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:04,025 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:09:04,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 15:09:04,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:04,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2054135496, now seen corresponding path program 2 times [2024-10-15 15:09:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713810558] [2024-10-15 15:09:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 15:09:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713810558] [2024-10-15 15:09:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713810558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269500139] [2024-10-15 15:09:04,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:09:04,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:04,743 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) [2024-10-15 15:09:04,744 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:09:04,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:09:04,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:04,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-15 15:09:04,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-15 15:09:04,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:09:05,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269500139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:05,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:05,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 28 [2024-10-15 15:09:05,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52491003] [2024-10-15 15:09:05,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:05,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 15:09:05,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 15:09:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-10-15 15:09:05,695 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-15 15:09:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:06,032 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-10-15 15:09:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 15:09:06,033 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 43 [2024-10-15 15:09:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:06,034 INFO L225 Difference]: With dead ends: 54 [2024-10-15 15:09:06,034 INFO L226 Difference]: Without dead ends: 50 [2024-10-15 15:09:06,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 15:09:06,037 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:06,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 289 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:09:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-15 15:09:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2024-10-15 15:09:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 8 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-15 15:09:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-10-15 15:09:06,052 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2024-10-15 15:09:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:06,052 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-10-15 15:09:06,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 20 states have internal predecessors, (47), 9 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-15 15:09:06,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-10-15 15:09:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-15 15:09:06,054 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:06,054 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:06,066 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:06,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-15 15:09:06,255 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:06,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 620923892, now seen corresponding path program 2 times [2024-10-15 15:09:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180769386] [2024-10-15 15:09:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 15:09:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180769386] [2024-10-15 15:09:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180769386] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013285206] [2024-10-15 15:09:06,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:09:06,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:06,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:06,852 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) [2024-10-15 15:09:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:09:06,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:09:06,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:06,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 15:09:06,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 15:09:07,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 15:09:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013285206] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:07,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:07,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 21] total 30 [2024-10-15 15:09:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124864859] [2024-10-15 15:09:07,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:07,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 15:09:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 15:09:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2024-10-15 15:09:07,957 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-15 15:09:08,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:08,358 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2024-10-15 15:09:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 15:09:08,359 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) Word has length 50 [2024-10-15 15:09:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:08,360 INFO L225 Difference]: With dead ends: 60 [2024-10-15 15:09:08,361 INFO L226 Difference]: Without dead ends: 56 [2024-10-15 15:09:08,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 15:09:08,362 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:08,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 359 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:09:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-15 15:09:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-10-15 15:09:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 9 states have return successors, (10), 9 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-15 15:09:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-10-15 15:09:08,373 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 50 [2024-10-15 15:09:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:08,373 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-10-15 15:09:08,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 21 states have internal predecessors, (51), 9 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-15 15:09:08,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-10-15 15:09:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-15 15:09:08,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:08,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:08,392 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 15:09:08,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:08,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:08,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -583855668, now seen corresponding path program 3 times [2024-10-15 15:09:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14937542] [2024-10-15 15:09:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:08,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:08,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:08,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:08,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-15 15:09:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14937542] [2024-10-15 15:09:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14937542] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751117009] [2024-10-15 15:09:09,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:09:09,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:09,334 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) [2024-10-15 15:09:09,336 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:09:09,390 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 15:09:09,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:09,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-15 15:09:09,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-15 15:09:09,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 15:09:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751117009] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:10,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:10,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 24] total 34 [2024-10-15 15:09:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801383664] [2024-10-15 15:09:10,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:10,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-15 15:09:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-15 15:09:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 15:09:10,645 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-10-15 15:09:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:11,051 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2024-10-15 15:09:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 15:09:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 57 [2024-10-15 15:09:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:11,056 INFO L225 Difference]: With dead ends: 66 [2024-10-15 15:09:11,056 INFO L226 Difference]: Without dead ends: 62 [2024-10-15 15:09:11,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 15:09:11,057 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:11,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 396 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:09:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-15 15:09:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2024-10-15 15:09:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 10 states have return successors, (11), 10 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-15 15:09:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-10-15 15:09:11,070 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 57 [2024-10-15 15:09:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-10-15 15:09:11,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 1.78125) internal successors, (57), 24 states have internal predecessors, (57), 11 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2024-10-15 15:09:11,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-10-15 15:09:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-15 15:09:11,072 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:11,072 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:11,089 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 15:09:11,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-15 15:09:11,277 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:11,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash -472917964, now seen corresponding path program 3 times [2024-10-15 15:09:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041751898] [2024-10-15 15:09:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:11,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:12,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:12,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 15:09:12,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041751898] [2024-10-15 15:09:12,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041751898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:12,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052385016] [2024-10-15 15:09:12,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:09:12,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:12,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:12,119 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) [2024-10-15 15:09:12,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:09:12,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 15:09:12,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:12,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-15 15:09:12,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 15:09:12,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 15:09:13,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052385016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:13,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:13,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 27] total 36 [2024-10-15 15:09:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783451532] [2024-10-15 15:09:13,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:13,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-15 15:09:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-15 15:09:13,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1145, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 15:09:13,535 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-10-15 15:09:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:14,030 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-10-15 15:09:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-15 15:09:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2024-10-15 15:09:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:14,032 INFO L225 Difference]: With dead ends: 72 [2024-10-15 15:09:14,032 INFO L226 Difference]: Without dead ends: 68 [2024-10-15 15:09:14,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=2209, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 15:09:14,033 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:14,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 479 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:09:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-15 15:09:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2024-10-15 15:09:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 11 states have return successors, (12), 11 states have call predecessors, (12), 4 states have call successors, (12) [2024-10-15 15:09:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-10-15 15:09:14,054 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 64 [2024-10-15 15:09:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:14,054 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-10-15 15:09:14,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 25 states have internal predecessors, (61), 11 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-10-15 15:09:14,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:14,055 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-10-15 15:09:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-15 15:09:14,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:14,056 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:14,069 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:09:14,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 15:09:14,257 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:14,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 749237840, now seen corresponding path program 4 times [2024-10-15 15:09:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266264657] [2024-10-15 15:09:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:14,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:15,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:15,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:15,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-15 15:09:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266264657] [2024-10-15 15:09:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266264657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489862045] [2024-10-15 15:09:15,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:09:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:15,283 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) [2024-10-15 15:09:15,285 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 15:09:15,338 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:09:15,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:15,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-15 15:09:15,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 15:09:15,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 15:09:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489862045] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:16,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:16,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 30] total 40 [2024-10-15 15:09:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572130328] [2024-10-15 15:09:16,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:16,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 15:09:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 15:09:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 15:09:16,836 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-10-15 15:09:17,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:17,361 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-10-15 15:09:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 15:09:17,361 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 71 [2024-10-15 15:09:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:17,362 INFO L225 Difference]: With dead ends: 78 [2024-10-15 15:09:17,362 INFO L226 Difference]: Without dead ends: 74 [2024-10-15 15:09:17,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=284, Invalid=2796, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 15:09:17,363 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:17,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 580 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:09:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-15 15:09:17,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2024-10-15 15:09:17,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 5 states have call successors, (5), 4 states have call predecessors, (5), 12 states have return successors, (13), 12 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-15 15:09:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-10-15 15:09:17,380 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 71 [2024-10-15 15:09:17,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:17,380 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-10-15 15:09:17,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.763157894736842) internal successors, (67), 28 states have internal predecessors, (67), 13 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2024-10-15 15:09:17,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:17,381 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-10-15 15:09:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-15 15:09:17,382 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:17,382 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:17,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:17,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:17,583 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:17,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1701421044, now seen corresponding path program 4 times [2024-10-15 15:09:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679211973] [2024-10-15 15:09:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:17,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:17,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:17,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-15 15:09:18,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679211973] [2024-10-15 15:09:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679211973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135497578] [2024-10-15 15:09:18,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:09:18,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:18,687 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) [2024-10-15 15:09:18,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 15:09:18,750 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:09:18,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:18,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-10-15 15:09:18,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-15 15:09:18,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-15 15:09:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135497578] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:20,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:20,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 33] total 42 [2024-10-15 15:09:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320480372] [2024-10-15 15:09:20,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:20,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-15 15:09:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-15 15:09:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 15:09:20,480 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-10-15 15:09:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:21,101 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-10-15 15:09:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 15:09:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) Word has length 78 [2024-10-15 15:09:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:21,102 INFO L225 Difference]: With dead ends: 84 [2024-10-15 15:09:21,102 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 15:09:21,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 15:09:21,104 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:21,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 559 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 15:09:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 15:09:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2024-10-15 15:09:21,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 13 states have return successors, (14), 13 states have call predecessors, (14), 4 states have call successors, (14) [2024-10-15 15:09:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-10-15 15:09:21,119 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 78 [2024-10-15 15:09:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:21,119 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-10-15 15:09:21,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 29 states have internal predecessors, (71), 13 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (22), 14 states have call predecessors, (22), 13 states have call successors, (22) [2024-10-15 15:09:21,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-10-15 15:09:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-15 15:09:21,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:21,120 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:21,132 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 15:09:21,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:21,321 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:21,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash -475870124, now seen corresponding path program 5 times [2024-10-15 15:09:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395195445] [2024-10-15 15:09:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:21,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:21,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:21,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:21,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:21,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-15 15:09:22,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395195445] [2024-10-15 15:09:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395195445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650238369] [2024-10-15 15:09:22,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:09:22,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:22,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:22,586 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) [2024-10-15 15:09:22,587 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 15:09:22,650 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-15 15:09:22,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:22,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-10-15 15:09:22,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-15 15:09:22,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-15 15:09:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650238369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:24,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 36] total 46 [2024-10-15 15:09:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678180418] [2024-10-15 15:09:24,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:24,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-15 15:09:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-15 15:09:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1916, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 15:09:24,614 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-10-15 15:09:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:25,366 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-10-15 15:09:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-15 15:09:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) Word has length 85 [2024-10-15 15:09:25,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:25,367 INFO L225 Difference]: With dead ends: 90 [2024-10-15 15:09:25,367 INFO L226 Difference]: Without dead ends: 86 [2024-10-15 15:09:25,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=364, Invalid=3926, Unknown=0, NotChecked=0, Total=4290 [2024-10-15 15:09:25,369 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:25,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 637 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 15:09:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-15 15:09:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 57. [2024-10-15 15:09:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 5 states have call successors, (5), 4 states have call predecessors, (5), 14 states have return successors, (15), 14 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-15 15:09:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-10-15 15:09:25,387 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 85 [2024-10-15 15:09:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:25,387 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-10-15 15:09:25,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.75) internal successors, (77), 32 states have internal predecessors, (77), 15 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (24), 15 states have call predecessors, (24), 15 states have call successors, (24) [2024-10-15 15:09:25,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-10-15 15:09:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-15 15:09:25,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:25,389 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:25,402 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 15:09:25,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 15:09:25,589 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:25,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:25,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2053954764, now seen corresponding path program 5 times [2024-10-15 15:09:25,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:25,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625780673] [2024-10-15 15:09:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:25,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:25,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:25,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:25,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-15 15:09:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625780673] [2024-10-15 15:09:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625780673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045727123] [2024-10-15 15:09:27,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:09:27,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:27,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:27,002 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) [2024-10-15 15:09:27,004 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 15:09:27,070 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-15 15:09:27,070 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:27,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-10-15 15:09:27,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-15 15:09:27,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-15 15:09:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045727123] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:29,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 39] total 48 [2024-10-15 15:09:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721358915] [2024-10-15 15:09:29,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:29,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-15 15:09:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-15 15:09:29,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2097, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 15:09:29,248 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-10-15 15:09:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:30,099 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-10-15 15:09:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 15:09:30,100 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) Word has length 92 [2024-10-15 15:09:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:30,101 INFO L225 Difference]: With dead ends: 96 [2024-10-15 15:09:30,101 INFO L226 Difference]: Without dead ends: 92 [2024-10-15 15:09:30,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=4429, Unknown=0, NotChecked=0, Total=4830 [2024-10-15 15:09:30,103 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 36 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:30,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 667 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 15:09:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-15 15:09:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 60. [2024-10-15 15:09:30,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 5 states have call successors, (5), 4 states have call predecessors, (5), 15 states have return successors, (16), 15 states have call predecessors, (16), 4 states have call successors, (16) [2024-10-15 15:09:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-10-15 15:09:30,121 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 92 [2024-10-15 15:09:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:30,121 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-10-15 15:09:30,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.7234042553191489) internal successors, (81), 33 states have internal predecessors, (81), 15 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (26), 16 states have call predecessors, (26), 15 states have call successors, (26) [2024-10-15 15:09:30,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:30,122 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-10-15 15:09:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-15 15:09:30,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:30,123 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:30,137 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:30,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 15:09:30,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:30,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash -142797864, now seen corresponding path program 6 times [2024-10-15 15:09:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409629869] [2024-10-15 15:09:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:30,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:30,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:30,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:30,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-15 15:09:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:31,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409629869] [2024-10-15 15:09:31,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409629869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380234450] [2024-10-15 15:09:31,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:09:31,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:31,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:31,988 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) [2024-10-15 15:09:31,990 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 15:09:32,078 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-15 15:09:32,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:32,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-10-15 15:09:32,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-10-15 15:09:32,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-15 15:09:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380234450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:34,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:34,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 42] total 52 [2024-10-15 15:09:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100956832] [2024-10-15 15:09:34,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:34,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-15 15:09:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-15 15:09:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2476, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 15:09:34,591 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-10-15 15:09:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:35,477 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2024-10-15 15:09:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-15 15:09:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) Word has length 99 [2024-10-15 15:09:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:35,478 INFO L225 Difference]: With dead ends: 102 [2024-10-15 15:09:35,479 INFO L226 Difference]: Without dead ends: 98 [2024-10-15 15:09:35,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2024-10-15 15:09:35,480 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:35,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 691 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 15:09:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-15 15:09:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 63. [2024-10-15 15:09:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 16 states have return successors, (17), 16 states have call predecessors, (17), 4 states have call successors, (17) [2024-10-15 15:09:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-10-15 15:09:35,504 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 99 [2024-10-15 15:09:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:35,505 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-10-15 15:09:35,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.74) internal successors, (87), 36 states have internal predecessors, (87), 17 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (28), 17 states have call predecessors, (28), 17 states have call successors, (28) [2024-10-15 15:09:35,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-10-15 15:09:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-15 15:09:35,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:35,506 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:35,522 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:35,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 15:09:35,707 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:35,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash -86531596, now seen corresponding path program 6 times [2024-10-15 15:09:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465103309] [2024-10-15 15:09:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:35,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:35,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:35,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:36,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-15 15:09:37,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:37,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465103309] [2024-10-15 15:09:37,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465103309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:37,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798859340] [2024-10-15 15:09:37,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:09:37,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:37,503 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) [2024-10-15 15:09:37,504 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 15:09:37,585 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-15 15:09:37,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:37,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-10-15 15:09:37,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-10-15 15:09:37,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-15 15:09:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798859340] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:40,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 45] total 55 [2024-10-15 15:09:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090905009] [2024-10-15 15:09:40,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:40,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-15 15:09:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-15 15:09:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2024-10-15 15:09:40,370 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-10-15 15:09:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:41,436 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2024-10-15 15:09:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-15 15:09:41,437 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 106 [2024-10-15 15:09:41,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:41,438 INFO L225 Difference]: With dead ends: 108 [2024-10-15 15:09:41,438 INFO L226 Difference]: Without dead ends: 104 [2024-10-15 15:09:41,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=497, Invalid=5983, Unknown=0, NotChecked=0, Total=6480 [2024-10-15 15:09:41,440 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:41,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 773 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:09:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-15 15:09:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 66. [2024-10-15 15:09:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 17 states have return successors, (18), 17 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-15 15:09:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2024-10-15 15:09:41,468 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 106 [2024-10-15 15:09:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:41,468 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2024-10-15 15:09:41,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 38 states have internal predecessors, (92), 18 states have call successors, (20), 1 states have call predecessors, (20), 16 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2024-10-15 15:09:41,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2024-10-15 15:09:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-15 15:09:41,469 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:41,469 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:41,481 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 15:09:41,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 15:09:41,670 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:41,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -736473892, now seen corresponding path program 7 times [2024-10-15 15:09:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713120823] [2024-10-15 15:09:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:41,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:41,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:41,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:42,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-15 15:09:43,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713120823] [2024-10-15 15:09:43,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713120823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:43,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219809831] [2024-10-15 15:09:43,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 15:09:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:43,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:09:43,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 15:09:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:43,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-10-15 15:09:43,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-10-15 15:09:43,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-15 15:09:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219809831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:46,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 48] total 58 [2024-10-15 15:09:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330965699] [2024-10-15 15:09:46,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:46,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-15 15:09:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:46,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-15 15:09:46,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3108, Unknown=0, NotChecked=0, Total=3306 [2024-10-15 15:09:46,553 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-10-15 15:09:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:47,579 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-10-15 15:09:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-15 15:09:47,580 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) Word has length 113 [2024-10-15 15:09:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:47,581 INFO L225 Difference]: With dead ends: 114 [2024-10-15 15:09:47,581 INFO L226 Difference]: Without dead ends: 110 [2024-10-15 15:09:47,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=548, Invalid=6762, Unknown=0, NotChecked=0, Total=7310 [2024-10-15 15:09:47,583 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 100 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:47,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 862 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:09:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-15 15:09:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2024-10-15 15:09:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 18 states have return successors, (19), 18 states have call predecessors, (19), 4 states have call successors, (19) [2024-10-15 15:09:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-10-15 15:09:47,615 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 113 [2024-10-15 15:09:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:47,615 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-10-15 15:09:47,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 1.7321428571428572) internal successors, (97), 40 states have internal predecessors, (97), 19 states have call successors, (21), 1 states have call predecessors, (21), 17 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2024-10-15 15:09:47,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-10-15 15:09:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-15 15:09:47,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:47,616 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:47,628 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:47,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 15:09:47,817 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:47,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash -561357772, now seen corresponding path program 7 times [2024-10-15 15:09:47,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580197949] [2024-10-15 15:09:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:48,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,653 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-15 15:09:49,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580197949] [2024-10-15 15:09:49,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580197949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213917388] [2024-10-15 15:09:49,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 15:09:49,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:49,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:09:49,656 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 15:09:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:49,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-10-15 15:09:49,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-10-15 15:09:49,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:09:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-15 15:09:53,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213917388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:09:53,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:09:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 51] total 60 [2024-10-15 15:09:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226936010] [2024-10-15 15:09:53,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:09:53,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-15 15:09:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:09:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-15 15:09:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3337, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 15:09:53,323 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-10-15 15:09:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:09:54,517 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2024-10-15 15:09:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 15:09:54,517 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) Word has length 120 [2024-10-15 15:09:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:09:54,518 INFO L225 Difference]: With dead ends: 120 [2024-10-15 15:09:54,518 INFO L226 Difference]: Without dead ends: 116 [2024-10-15 15:09:54,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=593, Invalid=7417, Unknown=0, NotChecked=0, Total=8010 [2024-10-15 15:09:54,520 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 15:09:54,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 909 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 15:09:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-15 15:09:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 72. [2024-10-15 15:09:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 19 states have return successors, (20), 19 states have call predecessors, (20), 4 states have call successors, (20) [2024-10-15 15:09:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2024-10-15 15:09:54,554 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 120 [2024-10-15 15:09:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:09:54,554 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2024-10-15 15:09:54,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 41 states have internal predecessors, (101), 19 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (34), 20 states have call predecessors, (34), 19 states have call successors, (34) [2024-10-15 15:09:54,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2024-10-15 15:09:54,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-15 15:09:54,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:09:54,555 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:09:54,570 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-15 15:09:54,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:54,756 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:09:54,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:09:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash -672827552, now seen corresponding path program 8 times [2024-10-15 15:09:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:09:54,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655128147] [2024-10-15 15:09:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:09:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:09:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:54,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:09:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:09:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:55,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:09:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:09:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-15 15:09:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:09:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655128147] [2024-10-15 15:09:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655128147] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:09:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064466318] [2024-10-15 15:09:56,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:09:56,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:09:56,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:09:56,836 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:09:56,838 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 15:09:56,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:09:56,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:09:56,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-10-15 15:09:56,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:09:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-15 15:09:57,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 368 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-15 15:10:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064466318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:00,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:00,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 54] total 64 [2024-10-15 15:10:00,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087462927] [2024-10-15 15:10:00,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:00,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-15 15:10:00,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-15 15:10:00,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3812, Unknown=0, NotChecked=0, Total=4032 [2024-10-15 15:10:00,696 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-10-15 15:10:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:02,076 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2024-10-15 15:10:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-15 15:10:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) Word has length 127 [2024-10-15 15:10:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:02,078 INFO L225 Difference]: With dead ends: 126 [2024-10-15 15:10:02,078 INFO L226 Difference]: Without dead ends: 122 [2024-10-15 15:10:02,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=652, Invalid=8468, Unknown=0, NotChecked=0, Total=9120 [2024-10-15 15:10:02,080 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 90 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1743 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:02,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1206 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-15 15:10:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-10-15 15:10:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 75. [2024-10-15 15:10:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 20 states have return successors, (21), 20 states have call predecessors, (21), 4 states have call successors, (21) [2024-10-15 15:10:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2024-10-15 15:10:02,116 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 127 [2024-10-15 15:10:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:02,116 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2024-10-15 15:10:02,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 62 states have (on average 1.7258064516129032) internal successors, (107), 44 states have internal predecessors, (107), 21 states have call successors, (23), 1 states have call predecessors, (23), 19 states have return successors, (36), 21 states have call predecessors, (36), 21 states have call successors, (36) [2024-10-15 15:10:02,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2024-10-15 15:10:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-15 15:10:02,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:02,117 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:02,130 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:02,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:02,318 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:02,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1262054924, now seen corresponding path program 8 times [2024-10-15 15:10:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769582697] [2024-10-15 15:10:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:02,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:02,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:02,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:02,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:03,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 15:10:04,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769582697] [2024-10-15 15:10:04,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769582697] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586825773] [2024-10-15 15:10:04,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:10:04,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:04,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:04,622 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:04,623 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 15:10:04,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:10:04,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:04,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-10-15 15:10:04,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-10-15 15:10:05,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-15 15:10:09,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586825773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:09,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 57] total 67 [2024-10-15 15:10:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694598187] [2024-10-15 15:10:09,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:09,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-10-15 15:10:09,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-10-15 15:10:09,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2024-10-15 15:10:09,030 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-10-15 15:10:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:10,557 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2024-10-15 15:10:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-15 15:10:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) Word has length 134 [2024-10-15 15:10:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:10,558 INFO L225 Difference]: With dead ends: 132 [2024-10-15 15:10:10,559 INFO L226 Difference]: Without dead ends: 128 [2024-10-15 15:10:10,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=705, Invalid=9395, Unknown=0, NotChecked=0, Total=10100 [2024-10-15 15:10:10,560 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:10,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1210 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-15 15:10:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-15 15:10:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2024-10-15 15:10:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 21 states have return successors, (22), 21 states have call predecessors, (22), 4 states have call successors, (22) [2024-10-15 15:10:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-10-15 15:10:10,598 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 134 [2024-10-15 15:10:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:10,598 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-10-15 15:10:10,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 65 states have (on average 1.7230769230769232) internal successors, (112), 46 states have internal predecessors, (112), 22 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (38), 22 states have call predecessors, (38), 22 states have call successors, (38) [2024-10-15 15:10:10,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-10-15 15:10:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-15 15:10:10,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:10,599 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:10,612 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:10,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:10,800 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:10,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1339134820, now seen corresponding path program 9 times [2024-10-15 15:10:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465176189] [2024-10-15 15:10:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:11,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:12,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-15 15:10:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465176189] [2024-10-15 15:10:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465176189] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946611228] [2024-10-15 15:10:13,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:10:13,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:13,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:13,467 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:13,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 15:10:13,602 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-15 15:10:13,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:13,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-10-15 15:10:13,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-15 15:10:13,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-15 15:10:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946611228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:18,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:18,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 60] total 70 [2024-10-15 15:10:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043290433] [2024-10-15 15:10:18,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:18,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-10-15 15:10:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-10-15 15:10:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4588, Unknown=0, NotChecked=0, Total=4830 [2024-10-15 15:10:18,226 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-10-15 15:10:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:19,775 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2024-10-15 15:10:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-15 15:10:19,775 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) Word has length 141 [2024-10-15 15:10:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:19,776 INFO L225 Difference]: With dead ends: 138 [2024-10-15 15:10:19,777 INFO L226 Difference]: Without dead ends: 134 [2024-10-15 15:10:19,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=764, Invalid=10366, Unknown=0, NotChecked=0, Total=11130 [2024-10-15 15:10:19,780 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:19,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1338 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-15 15:10:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-15 15:10:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 81. [2024-10-15 15:10:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 22 states have return successors, (23), 22 states have call predecessors, (23), 4 states have call successors, (23) [2024-10-15 15:10:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-10-15 15:10:19,846 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 141 [2024-10-15 15:10:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:19,847 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-10-15 15:10:19,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.7205882352941178) internal successors, (117), 48 states have internal predecessors, (117), 23 states have call successors, (25), 1 states have call predecessors, (25), 21 states have return successors, (40), 23 states have call predecessors, (40), 23 states have call successors, (40) [2024-10-15 15:10:19,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-10-15 15:10:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-15 15:10:19,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:19,848 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:19,860 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:20,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:20,049 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:20,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash -194018508, now seen corresponding path program 9 times [2024-10-15 15:10:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559832255] [2024-10-15 15:10:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:20,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:20,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:20,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:20,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:20,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:21,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 279 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-10-15 15:10:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559832255] [2024-10-15 15:10:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559832255] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7886706] [2024-10-15 15:10:22,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:10:22,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:22,678 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:22,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-15 15:10:22,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-10-15 15:10:22,831 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:22,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-10-15 15:10:22,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-15 15:10:23,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-15 15:10:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7886706] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:28,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 63] total 72 [2024-10-15 15:10:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757191194] [2024-10-15 15:10:28,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:28,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-15 15:10:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-15 15:10:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=4865, Unknown=0, NotChecked=0, Total=5112 [2024-10-15 15:10:28,024 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-10-15 15:10:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:29,758 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2024-10-15 15:10:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-15 15:10:29,759 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) Word has length 148 [2024-10-15 15:10:29,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:29,760 INFO L225 Difference]: With dead ends: 144 [2024-10-15 15:10:29,760 INFO L226 Difference]: Without dead ends: 140 [2024-10-15 15:10:29,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=817, Invalid=11173, Unknown=0, NotChecked=0, Total=11990 [2024-10-15 15:10:29,761 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:29,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1175 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-15 15:10:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-10-15 15:10:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 84. [2024-10-15 15:10:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 23 states have return successors, (24), 23 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-15 15:10:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-10-15 15:10:29,810 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 148 [2024-10-15 15:10:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:29,810 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-10-15 15:10:29,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.704225352112676) internal successors, (121), 49 states have internal predecessors, (121), 23 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (42), 24 states have call predecessors, (42), 23 states have call successors, (42) [2024-10-15 15:10:29,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-10-15 15:10:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-15 15:10:29,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:29,812 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:29,824 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:30,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-15 15:10:30,012 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:30,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash -212229912, now seen corresponding path program 10 times [2024-10-15 15:10:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356312488] [2024-10-15 15:10:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:30,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:30,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:30,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:30,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:30,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:31,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-10-15 15:10:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356312488] [2024-10-15 15:10:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356312488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327761609] [2024-10-15 15:10:32,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:10:32,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:32,988 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:32,989 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-15 15:10:33,151 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:10:33,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:33,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-10-15 15:10:33,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-10-15 15:10:33,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-15 15:10:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327761609] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:38,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 66] total 76 [2024-10-15 15:10:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754114916] [2024-10-15 15:10:38,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:38,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-10-15 15:10:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-10-15 15:10:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=5436, Unknown=0, NotChecked=0, Total=5700 [2024-10-15 15:10:38,650 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-10-15 15:10:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:40,484 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2024-10-15 15:10:40,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-15 15:10:40,484 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) Word has length 155 [2024-10-15 15:10:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:40,485 INFO L225 Difference]: With dead ends: 150 [2024-10-15 15:10:40,486 INFO L226 Difference]: Without dead ends: 146 [2024-10-15 15:10:40,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=884, Invalid=12456, Unknown=0, NotChecked=0, Total=13340 [2024-10-15 15:10:40,487 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 90 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:40,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1523 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-15 15:10:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-15 15:10:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 87. [2024-10-15 15:10:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 24 states have return successors, (25), 24 states have call predecessors, (25), 4 states have call successors, (25) [2024-10-15 15:10:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-10-15 15:10:40,564 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 155 [2024-10-15 15:10:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:40,565 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-10-15 15:10:40,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 74 states have (on average 1.7162162162162162) internal successors, (127), 52 states have internal predecessors, (127), 25 states have call successors, (27), 1 states have call predecessors, (27), 23 states have return successors, (44), 25 states have call predecessors, (44), 25 states have call successors, (44) [2024-10-15 15:10:40,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-10-15 15:10:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-15 15:10:40,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:40,567 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:40,580 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:40,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-15 15:10:40,767 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:40,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash 254832628, now seen corresponding path program 10 times [2024-10-15 15:10:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:40,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078986730] [2024-10-15 15:10:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:41,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:41,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:41,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:41,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:42,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:43,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:44,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:44,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:44,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 340 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-10-15 15:10:44,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:44,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078986730] [2024-10-15 15:10:44,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078986730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:44,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437407672] [2024-10-15 15:10:44,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:10:44,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:44,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:44,268 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-15 15:10:44,449 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:10:44,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:44,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-10-15 15:10:44,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2024-10-15 15:10:44,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:10:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 640 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-15 15:10:50,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437407672] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:10:50,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:10:50,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 69] total 78 [2024-10-15 15:10:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578062088] [2024-10-15 15:10:50,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:10:50,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-10-15 15:10:50,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:10:50,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-10-15 15:10:50,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5738, Unknown=0, NotChecked=0, Total=6006 [2024-10-15 15:10:50,407 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-10-15 15:10:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:10:52,506 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2024-10-15 15:10:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-15 15:10:52,506 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) Word has length 162 [2024-10-15 15:10:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:10:52,508 INFO L225 Difference]: With dead ends: 156 [2024-10-15 15:10:52,508 INFO L226 Difference]: Without dead ends: 152 [2024-10-15 15:10:52,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=940, Invalid=13340, Unknown=0, NotChecked=0, Total=14280 [2024-10-15 15:10:52,510 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-15 15:10:52,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1472 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-15 15:10:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-15 15:10:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 90. [2024-10-15 15:10:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 25 states have return successors, (26), 25 states have call predecessors, (26), 4 states have call successors, (26) [2024-10-15 15:10:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-10-15 15:10:52,573 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 162 [2024-10-15 15:10:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:10:52,574 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-10-15 15:10:52,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 53 states have internal predecessors, (131), 25 states have call successors, (27), 1 states have call predecessors, (27), 24 states have return successors, (46), 26 states have call predecessors, (46), 25 states have call successors, (46) [2024-10-15 15:10:52,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-10-15 15:10:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-15 15:10:52,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:10:52,575 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:10:52,590 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-15 15:10:52,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-15 15:10:52,776 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:10:52,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:10:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -528441364, now seen corresponding path program 11 times [2024-10-15 15:10:52,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:10:52,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244648466] [2024-10-15 15:10:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:10:52,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:10:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:53,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:10:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:53,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:10:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:53,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:53,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:53,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:54,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:55,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:10:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:10:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2024-10-15 15:10:56,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:10:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244648466] [2024-10-15 15:10:56,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244648466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:10:56,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754334936] [2024-10-15 15:10:56,408 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:10:56,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:10:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:10:56,409 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:10:56,410 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-15 15:10:56,614 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-15 15:10:56,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:10:56,617 WARN L253 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-10-15 15:10:56,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:10:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2024-10-15 15:10:56,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:11:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 704 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-10-15 15:11:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754334936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:11:03,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:11:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 72] total 82 [2024-10-15 15:11:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439603061] [2024-10-15 15:11:03,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:11:03,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-10-15 15:11:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:11:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-10-15 15:11:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=6356, Unknown=0, NotChecked=0, Total=6642 [2024-10-15 15:11:03,145 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-10-15 15:11:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:11:05,350 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2024-10-15 15:11:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-15 15:11:05,351 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) Word has length 169 [2024-10-15 15:11:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:11:05,352 INFO L225 Difference]: With dead ends: 162 [2024-10-15 15:11:05,352 INFO L226 Difference]: Without dead ends: 158 [2024-10-15 15:11:05,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1012, Invalid=14738, Unknown=0, NotChecked=0, Total=15750 [2024-10-15 15:11:05,354 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 256 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-15 15:11:05,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1725 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-15 15:11:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-15 15:11:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 93. [2024-10-15 15:11:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 26 states have return successors, (27), 26 states have call predecessors, (27), 4 states have call successors, (27) [2024-10-15 15:11:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-10-15 15:11:05,423 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 169 [2024-10-15 15:11:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:11:05,424 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-10-15 15:11:05,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7125) internal successors, (137), 56 states have internal predecessors, (137), 27 states have call successors, (29), 1 states have call predecessors, (29), 25 states have return successors, (48), 27 states have call predecessors, (48), 27 states have call successors, (48) [2024-10-15 15:11:05,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-10-15 15:11:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-15 15:11:05,425 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:11:05,425 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:11:05,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-15 15:11:05,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-15 15:11:05,626 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:11:05,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -109275084, now seen corresponding path program 11 times [2024-10-15 15:11:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:11:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152125210] [2024-10-15 15:11:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:11:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:11:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:05,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:11:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:05,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:11:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:06,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:06,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:06,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:07,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:07,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:07,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:07,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:07,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:08,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-10-15 15:11:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:11:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152125210] [2024-10-15 15:11:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152125210] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:11:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415262012] [2024-10-15 15:11:09,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:11:09,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:11:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:11:09,595 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:11:09,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-15 15:11:09,826 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-15 15:11:09,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:11:09,829 WARN L253 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-10-15 15:11:09,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:11:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-10-15 15:11:10,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:11:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 770 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-15 15:11:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415262012] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:11:16,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:11:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 75] total 84 [2024-10-15 15:11:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881959644] [2024-10-15 15:11:16,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:11:16,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-10-15 15:11:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:11:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-10-15 15:11:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=6682, Unknown=0, NotChecked=0, Total=6972 [2024-10-15 15:11:16,906 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-10-15 15:11:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:11:19,469 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2024-10-15 15:11:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-15 15:11:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) Word has length 176 [2024-10-15 15:11:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:11:19,471 INFO L225 Difference]: With dead ends: 168 [2024-10-15 15:11:19,471 INFO L226 Difference]: Without dead ends: 164 [2024-10-15 15:11:19,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1072, Invalid=15698, Unknown=0, NotChecked=0, Total=16770 [2024-10-15 15:11:19,473 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 3147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:11:19,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1833 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3147 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-15 15:11:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-10-15 15:11:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 96. [2024-10-15 15:11:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 27 states have return successors, (28), 27 states have call predecessors, (28), 4 states have call successors, (28) [2024-10-15 15:11:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-10-15 15:11:19,557 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 176 [2024-10-15 15:11:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:11:19,558 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-10-15 15:11:19,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.6987951807228916) internal successors, (141), 57 states have internal predecessors, (141), 27 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (50), 28 states have call predecessors, (50), 27 states have call successors, (50) [2024-10-15 15:11:19,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-10-15 15:11:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-15 15:11:19,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:11:19,559 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:11:19,572 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-15 15:11:19,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-15 15:11:19,759 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:11:19,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 399609968, now seen corresponding path program 12 times [2024-10-15 15:11:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:11:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315563487] [2024-10-15 15:11:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:11:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:11:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:20,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:11:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:20,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:11:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:20,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:20,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:21,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:21,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:21,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:21,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:22,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:23,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:24,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:24,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:24,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-10-15 15:11:24,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:11:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315563487] [2024-10-15 15:11:24,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315563487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:11:24,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790717367] [2024-10-15 15:11:24,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:11:24,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:11:24,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:11:24,326 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:11:24,326 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-15 15:11:24,578 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-15 15:11:24,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:11:24,581 WARN L253 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 208 conjuncts are in the unsatisfiable core [2024-10-15 15:11:24,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:11:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-10-15 15:11:24,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:11:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 15:11:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790717367] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:11:32,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:11:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 78] total 88 [2024-10-15 15:11:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761120481] [2024-10-15 15:11:32,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:11:32,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-15 15:11:32,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:11:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-15 15:11:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=7348, Unknown=0, NotChecked=0, Total=7656 [2024-10-15 15:11:32,245 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-10-15 15:11:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:11:34,787 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2024-10-15 15:11:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-15 15:11:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) Word has length 183 [2024-10-15 15:11:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:11:34,789 INFO L225 Difference]: With dead ends: 174 [2024-10-15 15:11:34,789 INFO L226 Difference]: Without dead ends: 170 [2024-10-15 15:11:34,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1148, Invalid=17212, Unknown=0, NotChecked=0, Total=18360 [2024-10-15 15:11:34,792 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 150 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-15 15:11:34,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1815 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-15 15:11:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-15 15:11:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 99. [2024-10-15 15:11:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 28 states have return successors, (29), 28 states have call predecessors, (29), 4 states have call successors, (29) [2024-10-15 15:11:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-10-15 15:11:34,876 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 183 [2024-10-15 15:11:34,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:11:34,876 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-10-15 15:11:34,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 1.7093023255813953) internal successors, (147), 60 states have internal predecessors, (147), 29 states have call successors, (31), 1 states have call predecessors, (31), 27 states have return successors, (52), 29 states have call predecessors, (52), 29 states have call successors, (52) [2024-10-15 15:11:34,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-10-15 15:11:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-15 15:11:34,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:11:34,878 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:11:34,891 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-15 15:11:35,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-15 15:11:35,078 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:11:35,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 848247796, now seen corresponding path program 12 times [2024-10-15 15:11:35,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:11:35,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917754848] [2024-10-15 15:11:35,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:11:35,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:11:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:35,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:11:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:35,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:11:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:35,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:36,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:36,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:36,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:37,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:37,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:37,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:37,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:38,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:39,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 480 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-10-15 15:11:40,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:11:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917754848] [2024-10-15 15:11:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917754848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:11:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794130952] [2024-10-15 15:11:40,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:11:40,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:11:40,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:11:40,090 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:11:40,091 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-15 15:11:40,374 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-15 15:11:40,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:11:40,377 WARN L253 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-10-15 15:11:40,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:11:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 15:11:40,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:11:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-10-15 15:11:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794130952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:11:48,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:11:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 81] total 90 [2024-10-15 15:11:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453653192] [2024-10-15 15:11:48,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:11:48,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-10-15 15:11:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:11:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-10-15 15:11:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7697, Unknown=0, NotChecked=0, Total=8010 [2024-10-15 15:11:48,632 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-10-15 15:11:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:11:51,395 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2024-10-15 15:11:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-15 15:11:51,396 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) Word has length 190 [2024-10-15 15:11:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:11:51,397 INFO L225 Difference]: With dead ends: 180 [2024-10-15 15:11:51,397 INFO L226 Difference]: Without dead ends: 176 [2024-10-15 15:11:51,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1213, Invalid=18247, Unknown=0, NotChecked=0, Total=19460 [2024-10-15 15:11:51,399 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 50 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:11:51,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1813 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-15 15:11:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-15 15:11:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2024-10-15 15:11:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 29 states have return successors, (30), 29 states have call predecessors, (30), 4 states have call successors, (30) [2024-10-15 15:11:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2024-10-15 15:11:51,497 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 190 [2024-10-15 15:11:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:11:51,497 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2024-10-15 15:11:51,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.696629213483146) internal successors, (151), 61 states have internal predecessors, (151), 29 states have call successors, (31), 1 states have call predecessors, (31), 28 states have return successors, (54), 30 states have call predecessors, (54), 29 states have call successors, (54) [2024-10-15 15:11:51,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2024-10-15 15:11:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-15 15:11:51,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:11:51,498 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:11:51,512 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-15 15:11:51,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-15 15:11:51,699 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:11:51,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:11:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2019521140, now seen corresponding path program 13 times [2024-10-15 15:11:51,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:11:51,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718419659] [2024-10-15 15:11:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:11:51,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:11:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:52,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:11:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:52,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:11:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:52,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:52,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:53,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:53,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:53,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:54,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:54,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:54,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:54,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:54,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:55,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:56,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:11:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 520 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-10-15 15:11:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:11:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718419659] [2024-10-15 15:11:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718419659] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:11:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066743078] [2024-10-15 15:11:57,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 15:11:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:11:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:11:57,067 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:11:57,068 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-15 15:11:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:11:57,370 WARN L253 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-10-15 15:11:57,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:11:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-10-15 15:11:57,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-10-15 15:12:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066743078] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:06,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:06,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 84] total 94 [2024-10-15 15:12:06,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949615124] [2024-10-15 15:12:06,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-10-15 15:12:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-10-15 15:12:06,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=8412, Unknown=0, NotChecked=0, Total=8742 [2024-10-15 15:12:06,195 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-10-15 15:12:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:09,217 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2024-10-15 15:12:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-10-15 15:12:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) Word has length 197 [2024-10-15 15:12:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:09,219 INFO L225 Difference]: With dead ends: 186 [2024-10-15 15:12:09,219 INFO L226 Difference]: Without dead ends: 182 [2024-10-15 15:12:09,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1292, Invalid=19878, Unknown=0, NotChecked=0, Total=21170 [2024-10-15 15:12:09,221 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 32 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:09,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2366 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-15 15:12:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-10-15 15:12:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2024-10-15 15:12:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 30 states have return successors, (31), 30 states have call predecessors, (31), 4 states have call successors, (31) [2024-10-15 15:12:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2024-10-15 15:12:09,374 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 197 [2024-10-15 15:12:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:09,375 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2024-10-15 15:12:09,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 92 states have (on average 1.7065217391304348) internal successors, (157), 64 states have internal predecessors, (157), 31 states have call successors, (33), 1 states have call predecessors, (33), 29 states have return successors, (56), 31 states have call predecessors, (56), 31 states have call successors, (56) [2024-10-15 15:12:09,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2024-10-15 15:12:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-15 15:12:09,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:09,376 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:09,395 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-15 15:12:09,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:09,577 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:09,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1282120500, now seen corresponding path program 13 times [2024-10-15 15:12:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290560583] [2024-10-15 15:12:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:10,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:10,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:12:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:10,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:10,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:11,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:11,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:11,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:12,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:12,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:12,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:12,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:13,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:14,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2024-10-15 15:12:15,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290560583] [2024-10-15 15:12:15,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290560583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507063213] [2024-10-15 15:12:15,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 15:12:15,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:15,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:15,384 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:12:15,384 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-15 15:12:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:15,717 WARN L253 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 232 conjuncts are in the unsatisfiable core [2024-10-15 15:12:15,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-10-15 15:12:16,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 1066 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-10-15 15:12:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507063213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:25,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:25,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 87] total 96 [2024-10-15 15:12:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477182851] [2024-10-15 15:12:25,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:25,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-10-15 15:12:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-10-15 15:12:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=8785, Unknown=0, NotChecked=0, Total=9120 [2024-10-15 15:12:25,054 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-10-15 15:12:28,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:28,409 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2024-10-15 15:12:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-15 15:12:28,410 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) Word has length 204 [2024-10-15 15:12:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:28,411 INFO L225 Difference]: With dead ends: 192 [2024-10-15 15:12:28,411 INFO L226 Difference]: Without dead ends: 188 [2024-10-15 15:12:28,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1361, Invalid=20989, Unknown=0, NotChecked=0, Total=22350 [2024-10-15 15:12:28,414 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:28,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2176 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-15 15:12:28,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-10-15 15:12:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2024-10-15 15:12:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 31 states have return successors, (32), 31 states have call predecessors, (32), 4 states have call successors, (32) [2024-10-15 15:12:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2024-10-15 15:12:28,536 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 204 [2024-10-15 15:12:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:28,537 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2024-10-15 15:12:28,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.694736842105263) internal successors, (161), 65 states have internal predecessors, (161), 31 states have call successors, (33), 1 states have call predecessors, (33), 30 states have return successors, (58), 32 states have call predecessors, (58), 31 states have call successors, (58) [2024-10-15 15:12:28,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2024-10-15 15:12:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-15 15:12:28,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:28,538 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:28,556 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-15 15:12:28,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:28,739 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:28,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1002784248, now seen corresponding path program 14 times [2024-10-15 15:12:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523790824] [2024-10-15 15:12:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:29,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:29,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:12:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:29,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:30,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:30,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:30,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:31,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:31,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:31,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:32,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:32,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:32,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:32,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:33,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:34,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:35,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:35,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-10-15 15:12:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:12:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523790824] [2024-10-15 15:12:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523790824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:12:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850244311] [2024-10-15 15:12:35,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:12:35,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:35,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:12:35,194 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 15:12:35,194 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-15 15:12:35,554 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:12:35,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:12:35,558 WARN L253 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 240 conjuncts are in the unsatisfiable core [2024-10-15 15:12:35,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:12:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-10-15 15:12:35,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:12:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1148 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-15 15:12:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850244311] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:12:45,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:12:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 90] total 100 [2024-10-15 15:12:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953463310] [2024-10-15 15:12:45,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:12:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-10-15 15:12:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:12:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-10-15 15:12:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=9548, Unknown=0, NotChecked=0, Total=9900 [2024-10-15 15:12:45,521 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-10-15 15:12:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:12:49,135 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2024-10-15 15:12:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-15 15:12:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) Word has length 211 [2024-10-15 15:12:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:12:49,137 INFO L225 Difference]: With dead ends: 198 [2024-10-15 15:12:49,137 INFO L226 Difference]: Without dead ends: 194 [2024-10-15 15:12:49,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1444, Invalid=22736, Unknown=0, NotChecked=0, Total=24180 [2024-10-15 15:12:49,139 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-15 15:12:49,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 2354 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-15 15:12:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-10-15 15:12:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 111. [2024-10-15 15:12:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 32 states have return successors, (33), 32 states have call predecessors, (33), 4 states have call successors, (33) [2024-10-15 15:12:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2024-10-15 15:12:49,262 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 211 [2024-10-15 15:12:49,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:12:49,263 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2024-10-15 15:12:49,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 98 states have (on average 1.7040816326530612) internal successors, (167), 68 states have internal predecessors, (167), 33 states have call successors, (35), 1 states have call predecessors, (35), 31 states have return successors, (60), 33 states have call predecessors, (60), 33 states have call successors, (60) [2024-10-15 15:12:49,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2024-10-15 15:12:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-10-15 15:12:49,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:12:49,264 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:12:49,278 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-15 15:12:49,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:12:49,465 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:12:49,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:12:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash -203622924, now seen corresponding path program 14 times [2024-10-15 15:12:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:12:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163036500] [2024-10-15 15:12:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:12:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:12:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:12:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:49,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-15 15:12:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:50,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:12:51,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:12:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat