./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.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 de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.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 c39f3d25be406fa166da46a61b4a36c0a90262202dfdee83ae8e5211f182a6f7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:03:41,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:03:41,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:03:41,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:03:41,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:03:41,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:03:41,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:03:41,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:03:41,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:03:41,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:03:41,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:03:41,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:03:41,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:03:41,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:03:41,237 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:03:41,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:03:41,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:03:41,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:03:41,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:03:41,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:03:41,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:03:41,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:03:41,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:03:41,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:03:41,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:03:41,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:03:41,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:03:41,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:03:41,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:03:41,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:03:41,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:03:41,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:03:41,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:41,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:03:41,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:03:41,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:03:41,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:03:41,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:03:41,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:03:41,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:03:41,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:03:41,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:03:41,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c39f3d25be406fa166da46a61b4a36c0a90262202dfdee83ae8e5211f182a6f7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:03:41,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:03:41,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:03:41,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:03:41,481 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:03:41,481 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:03:41,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2024-09-17 19:03:42,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:03:42,989 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:03:42,990 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2024-09-17 19:03:42,999 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8f7c6151f/326a184cbc3c4fe6aadb30238c1baf78/FLAGd5c6cdaca [2024-09-17 19:03:43,016 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8f7c6151f/326a184cbc3c4fe6aadb30238c1baf78 [2024-09-17 19:03:43,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:03:43,023 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:03:43,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:43,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:03:43,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:03:43,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c061e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43, skipping insertion in model container [2024-09-17 19:03:43,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:03:43,209 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2024-09-17 19:03:43,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:43,237 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:03:43,250 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c[526,539] [2024-09-17 19:03:43,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:03:43,274 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:03:43,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43 WrapperNode [2024-09-17 19:03:43,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:03:43,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:43,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:03:43,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:03:43,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,297 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:03:43,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:03:43,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:03:43,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:03:43,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:03:43,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,334 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-09-17 19:03:43,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:03:43,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:03:43,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:03:43,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:03:43,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (1/1) ... [2024-09-17 19:03:43,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:03:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:43,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-17 19:03:43,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-17 19:03:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:03:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:03:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-17 19:03:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:03:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:03:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:03:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:03:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:03:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:03:43,516 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:03:43,518 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:03:43,695 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-17 19:03:43,695 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:03:43,727 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:03:43,728 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-17 19:03:43,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:43 BoogieIcfgContainer [2024-09-17 19:03:43,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:03:43,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:03:43,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:03:43,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:03:43,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:03:43" (1/3) ... [2024-09-17 19:03:43,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9fd497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:43, skipping insertion in model container [2024-09-17 19:03:43,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:03:43" (2/3) ... [2024-09-17 19:03:43,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9fd497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:03:43, skipping insertion in model container [2024-09-17 19:03:43,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:43" (3/3) ... [2024-09-17 19:03:43,739 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c [2024-09-17 19:03:43,756 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:03:43,756 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:03:43,813 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:03:43,819 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30335f77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:03:43,820 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:03:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-17 19:03:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 19:03:43,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:43,831 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:43,832 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:43,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -909137831, now seen corresponding path program 1 times [2024-09-17 19:03:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737758658] [2024-09-17 19:03:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:43,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737758658] [2024-09-17 19:03:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737758658] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:44,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:03:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362378114] [2024-09-17 19:03:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:44,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:03:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:03:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:44,048 INFO L87 Difference]: Start difference. First operand has 33 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:44,077 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-09-17 19:03:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:03:44,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-17 19:03:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:44,087 INFO L225 Difference]: With dead ends: 58 [2024-09-17 19:03:44,087 INFO L226 Difference]: Without dead ends: 29 [2024-09-17 19:03:44,092 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:03:44,095 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:44,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-17 19:03:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-09-17 19:03:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-09-17 19:03:44,127 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 16 [2024-09-17 19:03:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:44,127 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-09-17 19:03:44,128 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:44,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-09-17 19:03:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-17 19:03:44,129 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:44,129 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:44,130 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:03:44,130 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:44,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash -229079461, now seen corresponding path program 1 times [2024-09-17 19:03:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438470288] [2024-09-17 19:03:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438470288] [2024-09-17 19:03:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438470288] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:44,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809921019] [2024-09-17 19:03:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:44,373 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:44,375 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:44,452 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2024-09-17 19:03:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:44,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-17 19:03:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:44,454 INFO L225 Difference]: With dead ends: 42 [2024-09-17 19:03:44,454 INFO L226 Difference]: Without dead ends: 40 [2024-09-17 19:03:44,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:44,456 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:44,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-17 19:03:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-09-17 19:03:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-09-17 19:03:44,471 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 16 [2024-09-17 19:03:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:44,472 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-09-17 19:03:44,472 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:03:44,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-09-17 19:03:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-17 19:03:44,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:44,474 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:44,475 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:03:44,475 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:44,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash 520476838, now seen corresponding path program 1 times [2024-09-17 19:03:44,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098498120] [2024-09-17 19:03:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:03:44,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:44,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098498120] [2024-09-17 19:03:44,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098498120] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:44,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:44,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:44,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427986584] [2024-09-17 19:03:44,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:44,635 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:44,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:44,637 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:03:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:44,704 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2024-09-17 19:03:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:44,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-17 19:03:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:44,706 INFO L225 Difference]: With dead ends: 46 [2024-09-17 19:03:44,706 INFO L226 Difference]: Without dead ends: 44 [2024-09-17 19:03:44,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:44,708 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:44,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 111 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-17 19:03:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-17 19:03:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-17 19:03:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-17 19:03:44,716 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 21 [2024-09-17 19:03:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:44,717 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-17 19:03:44,717 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:03:44,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-17 19:03:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-17 19:03:44,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:44,719 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:44,719 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-17 19:03:44,719 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:44,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1140086011, now seen corresponding path program 1 times [2024-09-17 19:03:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039180282] [2024-09-17 19:03:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:44,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136837660] [2024-09-17 19:03:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:44,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:44,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:44,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:44,744 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:03:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:44,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 19:03:44,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:03:44,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:03:44,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:44,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039180282] [2024-09-17 19:03:44,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:44,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136837660] [2024-09-17 19:03:44,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136837660] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:44,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:44,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8623909] [2024-09-17 19:03:44,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:44,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:44,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:44,904 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:44,988 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-09-17 19:03:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:44,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-09-17 19:03:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:44,991 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:03:44,991 INFO L226 Difference]: Without dead ends: 50 [2024-09-17 19:03:44,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:44,992 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:44,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:03:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-17 19:03:45,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-17 19:03:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 19:03:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-09-17 19:03:45,004 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 26 [2024-09-17 19:03:45,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:45,004 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-09-17 19:03:45,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 19:03:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-09-17 19:03:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-17 19:03:45,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:45,006 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:45,023 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:03:45,207 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:45,208 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:45,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash -975701997, now seen corresponding path program 1 times [2024-09-17 19:03:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:45,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955636099] [2024-09-17 19:03:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125249508] [2024-09-17 19:03:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:45,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:45,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:45,231 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:03:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:45,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:03:45,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 19:03:45,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:03:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955636099] [2024-09-17 19:03:45,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125249508] [2024-09-17 19:03:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125249508] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172514607] [2024-09-17 19:03:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:45,352 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:45,353 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:45,432 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2024-09-17 19:03:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-17 19:03:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:45,434 INFO L225 Difference]: With dead ends: 63 [2024-09-17 19:03:45,434 INFO L226 Difference]: Without dead ends: 61 [2024-09-17 19:03:45,435 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:45,438 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:45,438 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:03:45,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-17 19:03:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-09-17 19:03:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:03:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2024-09-17 19:03:45,459 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 33 [2024-09-17 19:03:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:45,460 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2024-09-17 19:03:45,460 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:45,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2024-09-17 19:03:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-17 19:03:45,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:45,461 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:45,478 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:03:45,662 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:45,662 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:45,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -928833564, now seen corresponding path program 1 times [2024-09-17 19:03:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153293738] [2024-09-17 19:03:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885240245] [2024-09-17 19:03:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:45,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:45,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:45,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:45,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:03:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:45,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 19:03:45,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-17 19:03:45,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-09-17 19:03:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153293738] [2024-09-17 19:03:46,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885240245] [2024-09-17 19:03:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885240245] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:46,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:03:46,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-17 19:03:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366481598] [2024-09-17 19:03:46,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:46,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:46,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:03:46,016 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:46,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:46,089 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-09-17 19:03:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:46,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-09-17 19:03:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:46,092 INFO L225 Difference]: With dead ends: 70 [2024-09-17 19:03:46,093 INFO L226 Difference]: Without dead ends: 68 [2024-09-17 19:03:46,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-17 19:03:46,094 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:46,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:03:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-17 19:03:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2024-09-17 19:03:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 41 states have internal predecessors, (45), 20 states have call successors, (20), 9 states have call predecessors, (20), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 19:03:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-09-17 19:03:46,122 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 43 [2024-09-17 19:03:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:46,125 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-09-17 19:03:46,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-17 19:03:46,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-09-17 19:03:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-17 19:03:46,127 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:46,127 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:46,144 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 19:03:46,327 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:03:46,328 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:46,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash -238148106, now seen corresponding path program 1 times [2024-09-17 19:03:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777939671] [2024-09-17 19:03:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:46,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:03:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:03:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:03:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:03:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-17 19:03:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-17 19:03:46,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:46,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777939671] [2024-09-17 19:03:46,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777939671] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:03:46,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:03:46,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:03:46,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503526637] [2024-09-17 19:03:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:03:46,511 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:03:46,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:46,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:03:46,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:03:46,512 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 19:03:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:46,569 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2024-09-17 19:03:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:03:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-09-17 19:03:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:46,571 INFO L225 Difference]: With dead ends: 75 [2024-09-17 19:03:46,573 INFO L226 Difference]: Without dead ends: 63 [2024-09-17 19:03:46,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:03:46,574 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:46,574 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:03:46,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-17 19:03:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-17 19:03:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 19:03:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-09-17 19:03:46,586 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 49 [2024-09-17 19:03:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:46,586 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-09-17 19:03:46,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-09-17 19:03:46,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-09-17 19:03:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-09-17 19:03:46,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:46,590 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:46,590 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-17 19:03:46,590 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:46,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1374799408, now seen corresponding path program 1 times [2024-09-17 19:03:46,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:46,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834712909] [2024-09-17 19:03:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:46,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183169598] [2024-09-17 19:03:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:46,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:46,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:46,640 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:03:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:46,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-17 19:03:46,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-17 19:03:47,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-17 19:03:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834712909] [2024-09-17 19:03:48,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183169598] [2024-09-17 19:03:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183169598] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:48,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:48,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-17 19:03:48,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523804628] [2024-09-17 19:03:48,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:48,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 19:03:48,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 19:03:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:03:48,444 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:03:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:49,049 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2024-09-17 19:03:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:03:49,050 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-09-17 19:03:49,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:49,051 INFO L225 Difference]: With dead ends: 138 [2024-09-17 19:03:49,052 INFO L226 Difference]: Without dead ends: 115 [2024-09-17 19:03:49,052 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:03:49,053 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:49,053 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 225 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:03:49,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-17 19:03:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-17 19:03:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 71 states have internal predecessors, (80), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 19:03:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 146 transitions. [2024-09-17 19:03:49,087 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 146 transitions. Word has length 63 [2024-09-17 19:03:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:49,088 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 146 transitions. [2024-09-17 19:03:49,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 14 states have internal predecessors, (36), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:03:49,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 146 transitions. [2024-09-17 19:03:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-17 19:03:49,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:49,090 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:49,107 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 19:03:49,294 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:49,295 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:49,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2048390162, now seen corresponding path program 1 times [2024-09-17 19:03:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887812723] [2024-09-17 19:03:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086879875] [2024-09-17 19:03:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:49,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:49,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:49,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:03:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:49,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 19:03:49,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-17 19:03:49,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-17 19:03:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887812723] [2024-09-17 19:03:50,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:03:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086879875] [2024-09-17 19:03:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086879875] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:50,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:03:50,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-17 19:03:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9337081] [2024-09-17 19:03:50,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:50,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 19:03:50,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 19:03:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:03:50,150 INFO L87 Difference]: Start difference. First operand 113 states and 146 transitions. Second operand has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-17 19:03:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:50,847 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2024-09-17 19:03:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 19:03:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-09-17 19:03:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:50,851 INFO L225 Difference]: With dead ends: 168 [2024-09-17 19:03:50,851 INFO L226 Difference]: Without dead ends: 136 [2024-09-17 19:03:50,852 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-09-17 19:03:50,854 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:50,854 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 195 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-17 19:03:50,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-17 19:03:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 110. [2024-09-17 19:03:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 70 states have internal predecessors, (76), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-17 19:03:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2024-09-17 19:03:50,887 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 74 [2024-09-17 19:03:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:50,887 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2024-09-17 19:03:50,888 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2024-09-17 19:03:50,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2024-09-17 19:03:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-17 19:03:50,889 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:50,890 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:50,906 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-17 19:03:51,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:51,094 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:51,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1556827571, now seen corresponding path program 1 times [2024-09-17 19:03:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598527200] [2024-09-17 19:03:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:51,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:03:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:03:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:03:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:03:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:03:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:03:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:03:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:03:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:03:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:03:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-17 19:03:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-17 19:03:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-17 19:03:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:03:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:03:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598527200] [2024-09-17 19:03:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598527200] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:03:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500918702] [2024-09-17 19:03:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:51,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:51,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:51,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:51,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 19:03:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:03:51,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-17 19:03:51,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:03:51,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:03:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-17 19:03:52,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500918702] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:03:52,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:03:52,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-09-17 19:03:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956791474] [2024-09-17 19:03:52,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:03:52,030 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 19:03:52,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:03:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 19:03:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:03:52,033 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-17 19:03:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:03:52,222 INFO L93 Difference]: Finished difference Result 129 states and 155 transitions. [2024-09-17 19:03:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 19:03:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) Word has length 79 [2024-09-17 19:03:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:03:52,224 INFO L225 Difference]: With dead ends: 129 [2024-09-17 19:03:52,227 INFO L226 Difference]: Without dead ends: 100 [2024-09-17 19:03:52,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:03:52,228 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:03:52,228 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 225 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:03:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-17 19:03:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-09-17 19:03:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-17 19:03:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2024-09-17 19:03:52,266 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 79 [2024-09-17 19:03:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:03:52,266 INFO L474 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2024-09-17 19:03:52,266 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 8 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 8 states have call predecessors, (34), 8 states have call successors, (34) [2024-09-17 19:03:52,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2024-09-17 19:03:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-17 19:03:52,268 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:03:52,268 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:03:52,284 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-17 19:03:52,472 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-17 19:03:52,473 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:03:52,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:03:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash -802122381, now seen corresponding path program 2 times [2024-09-17 19:03:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:03:52,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002597333] [2024-09-17 19:03:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:03:52,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:03:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:03:52,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244717085] [2024-09-17 19:03:52,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:03:52,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:03:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:03:52,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:03:52,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 19:03:52,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:03:52,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:03:52,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-17 19:03:52,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:03:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 19:03:52,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-17 19:04:08,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002597333] [2024-09-17 19:04:08,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:04:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244717085] [2024-09-17 19:04:08,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244717085] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:08,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:04:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-09-17 19:04:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662579937] [2024-09-17 19:04:08,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:08,944 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-17 19:04:08,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-17 19:04:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-09-17 19:04:08,946 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-17 19:04:21,499 WARN L293 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 171 DAG size of output: 83 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 19:04:22,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:24,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:41,201 WARN L293 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 156 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-17 19:04:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:42,244 INFO L93 Difference]: Finished difference Result 203 states and 265 transitions. [2024-09-17 19:04:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-17 19:04:42,245 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 93 [2024-09-17 19:04:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:42,246 INFO L225 Difference]: With dead ends: 203 [2024-09-17 19:04:42,246 INFO L226 Difference]: Without dead ends: 170 [2024-09-17 19:04:42,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:04:42,247 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 66 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:42,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 513 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-09-17 19:04:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-09-17 19:04:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-09-17 19:04:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.183673469387755) internal successors, (116), 105 states have internal predecessors, (116), 51 states have call successors, (51), 17 states have call predecessors, (51), 16 states have return successors, (49), 43 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-17 19:04:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2024-09-17 19:04:42,304 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 93 [2024-09-17 19:04:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:42,305 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2024-09-17 19:04:42,305 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2024-09-17 19:04:42,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2024-09-17 19:04:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-17 19:04:42,307 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:42,307 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:42,324 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:42,507 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:42,508 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:42,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 644553835, now seen corresponding path program 2 times [2024-09-17 19:04:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:42,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86834702] [2024-09-17 19:04:42,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:04:42,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578673488] [2024-09-17 19:04:42,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:04:42,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:42,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:42,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:42,552 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 19:04:42,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:04:42,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:42,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-17 19:04:42,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-17 19:04:42,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 50 proven. 50 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-17 19:04:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86834702] [2024-09-17 19:04:46,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:04:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578673488] [2024-09-17 19:04:46,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578673488] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:46,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:04:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2024-09-17 19:04:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343111158] [2024-09-17 19:04:46,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:46,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-17 19:04:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-17 19:04:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-09-17 19:04:46,077 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-17 19:04:50,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 19:04:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:50,621 INFO L93 Difference]: Finished difference Result 246 states and 327 transitions. [2024-09-17 19:04:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 19:04:50,622 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 104 [2024-09-17 19:04:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:50,623 INFO L225 Difference]: With dead ends: 246 [2024-09-17 19:04:50,623 INFO L226 Difference]: Without dead ends: 185 [2024-09-17 19:04:50,624 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2024-09-17 19:04:50,625 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:50,625 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 422 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-09-17 19:04:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-17 19:04:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 161. [2024-09-17 19:04:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1666666666666667) internal successors, (112), 103 states have internal predecessors, (112), 47 states have call successors, (47), 18 states have call predecessors, (47), 17 states have return successors, (45), 39 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-17 19:04:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2024-09-17 19:04:50,696 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 104 [2024-09-17 19:04:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:50,696 INFO L474 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2024-09-17 19:04:50,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-17 19:04:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2024-09-17 19:04:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-17 19:04:50,698 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:50,698 INFO L216 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:50,718 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-17 19:04:50,902 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:50,903 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1191181482, now seen corresponding path program 2 times [2024-09-17 19:04:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755658176] [2024-09-17 19:04:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:04:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:04:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:04:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:04:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:04:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:04:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:04:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:04:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:04:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:04:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:04:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:04:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:04:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-17 19:04:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-17 19:04:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-17 19:04:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-17 19:04:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-17 19:04:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-17 19:04:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755658176] [2024-09-17 19:04:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755658176] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:04:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515258499] [2024-09-17 19:04:51,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:04:51,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:51,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:51,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:51,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 19:04:51,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:04:51,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:51,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-09-17 19:04:51,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-17 19:04:51,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 53 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-17 19:04:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515258499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:52,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:04:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 25 [2024-09-17 19:04:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86776467] [2024-09-17 19:04:52,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:52,724 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 19:04:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 19:04:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-17 19:04:52,725 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-17 19:04:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:53,166 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2024-09-17 19:04:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-17 19:04:53,166 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) Word has length 109 [2024-09-17 19:04:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:53,168 INFO L225 Difference]: With dead ends: 187 [2024-09-17 19:04:53,168 INFO L226 Difference]: Without dead ends: 145 [2024-09-17 19:04:53,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2024-09-17 19:04:53,169 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:53,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 334 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:04:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-17 19:04:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-09-17 19:04:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 89 states have internal predecessors, (96), 38 states have call successors, (38), 17 states have call predecessors, (38), 16 states have return successors, (36), 32 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-17 19:04:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 170 transitions. [2024-09-17 19:04:53,243 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 170 transitions. Word has length 109 [2024-09-17 19:04:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:53,243 INFO L474 AbstractCegarLoop]: Abstraction has 139 states and 170 transitions. [2024-09-17 19:04:53,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 18 states have call successors, (52), 3 states have call predecessors, (52), 2 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-09-17 19:04:53,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 170 transitions. [2024-09-17 19:04:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-17 19:04:53,245 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:53,245 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:53,445 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-17 19:04:53,446 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:53,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash -626389098, now seen corresponding path program 1 times [2024-09-17 19:04:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:53,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740329742] [2024-09-17 19:04:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:53,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:04:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:04:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:04:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:04:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:04:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:04:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:04:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:04:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:04:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:04:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:04:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:04:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:04:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 19:04:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 19:04:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 19:04:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 19:04:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-17 19:04:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 19:04:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 19:04:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:04:53,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740329742] [2024-09-17 19:04:53,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740329742] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:04:53,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922697199] [2024-09-17 19:04:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:53,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:53,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:53,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:53,698 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-17 19:04:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:53,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:04:53,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:04:53,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-17 19:04:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922697199] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:53,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:04:53,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 9 [2024-09-17 19:04:53,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436678191] [2024-09-17 19:04:53,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:53,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-17 19:04:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:53,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-17 19:04:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:04:53,986 INFO L87 Difference]: Start difference. First operand 139 states and 170 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 19:04:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:54,160 INFO L93 Difference]: Finished difference Result 155 states and 191 transitions. [2024-09-17 19:04:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:04:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 121 [2024-09-17 19:04:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:54,163 INFO L225 Difference]: With dead ends: 155 [2024-09-17 19:04:54,163 INFO L226 Difference]: Without dead ends: 148 [2024-09-17 19:04:54,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-09-17 19:04:54,164 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:54,164 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 185 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:04:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-09-17 19:04:54,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2024-09-17 19:04:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 93 states have internal predecessors, (100), 42 states have call successors, (42), 17 states have call predecessors, (42), 16 states have return successors, (40), 36 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-17 19:04:54,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2024-09-17 19:04:54,252 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 121 [2024-09-17 19:04:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:54,253 INFO L474 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2024-09-17 19:04:54,253 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 9 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2024-09-17 19:04:54,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2024-09-17 19:04:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-17 19:04:54,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:54,256 INFO L216 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:54,274 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-17 19:04:54,457 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-17 19:04:54,457 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:54,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1967500462, now seen corresponding path program 1 times [2024-09-17 19:04:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:54,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583692244] [2024-09-17 19:04:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:54,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:04:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:04:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-17 19:04:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-17 19:04:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-17 19:04:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-17 19:04:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-17 19:04:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-17 19:04:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-17 19:04:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-17 19:04:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-17 19:04:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-17 19:04:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-17 19:04:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-17 19:04:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-17 19:04:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-17 19:04:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-17 19:04:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-17 19:04:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-17 19:04:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-17 19:04:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 63 proven. 15 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2024-09-17 19:04:54,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583692244] [2024-09-17 19:04:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583692244] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:04:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614743660] [2024-09-17 19:04:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:54,683 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:54,685 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-17 19:04:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:04:54,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 19:04:54,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-09-17 19:04:54,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:04:54,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614743660] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:04:54,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:04:54,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2024-09-17 19:04:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835084653] [2024-09-17 19:04:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:04:54,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 19:04:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 19:04:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:04:54,875 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:04:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:55,069 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-09-17 19:04:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:04:55,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 123 [2024-09-17 19:04:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:55,071 INFO L225 Difference]: With dead ends: 190 [2024-09-17 19:04:55,071 INFO L226 Difference]: Without dead ends: 147 [2024-09-17 19:04:55,071 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-17 19:04:55,072 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:55,072 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 125 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:04:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-17 19:04:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2024-09-17 19:04:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 83 states have internal predecessors, (88), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-17 19:04:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2024-09-17 19:04:55,152 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 123 [2024-09-17 19:04:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:55,154 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2024-09-17 19:04:55,155 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-09-17 19:04:55,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2024-09-17 19:04:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-09-17 19:04:55,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:04:55,156 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:55,172 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:55,360 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-17 19:04:55,361 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:04:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash -478157618, now seen corresponding path program 3 times [2024-09-17 19:04:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:04:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029508826] [2024-09-17 19:04:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:04:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:04:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 19:04:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636209237] [2024-09-17 19:04:55,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:04:55,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:04:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:04:55,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:04:55,415 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-17 19:04:55,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-17 19:04:55,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:04:55,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-17 19:04:55,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:04:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 163 proven. 53 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2024-09-17 19:04:55,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:04:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-17 19:04:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:04:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029508826] [2024-09-17 19:04:55,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 19:04:55,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636209237] [2024-09-17 19:04:55,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636209237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:04:55,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:04:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-17 19:04:55,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451652340] [2024-09-17 19:04:55,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:04:55,770 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-17 19:04:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:04:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-17 19:04:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:04:55,771 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-17 19:04:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:04:56,022 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2024-09-17 19:04:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 19:04:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 134 [2024-09-17 19:04:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:04:56,023 INFO L225 Difference]: With dead ends: 130 [2024-09-17 19:04:56,023 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:04:56,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-09-17 19:04:56,024 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:04:56,024 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:04:56,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:04:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:04:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:04:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:04:56,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134 [2024-09-17 19:04:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:04:56,025 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:04:56,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-09-17 19:04:56,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:04:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:04:56,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:04:56,029 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:04:56,045 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-17 19:04:56,229 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-17 19:04:56,233 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:04:56,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:04:58,606 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:04:58,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:04:58 BoogieIcfgContainer [2024-09-17 19:04:58,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:04:58,623 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 19:04:58,623 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 19:04:58,623 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 19:04:58,623 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:03:43" (3/4) ... [2024-09-17 19:04:58,625 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 19:04:58,679 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 19:04:58,679 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 19:04:58,680 INFO L158 Benchmark]: Toolchain (without parser) took 75656.68ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 145.0MB in the beginning and 125.2MB in the end (delta: 19.7MB). Peak memory consumption was 96.8MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,680 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:04:58,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.78ms. Allocated memory is still 174.1MB. Free memory was 145.0MB in the beginning and 132.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.68ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 131.9MB in the end (delta: 637.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:04:58,681 INFO L158 Benchmark]: Boogie Preprocessor took 55.84ms. Allocated memory is still 174.1MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,682 INFO L158 Benchmark]: RCFGBuilder took 373.74ms. Allocated memory is still 174.1MB. Free memory was 129.8MB in the beginning and 116.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,682 INFO L158 Benchmark]: TraceAbstraction took 74891.41ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 115.7MB in the beginning and 128.3MB in the end (delta: -12.6MB). Peak memory consumption was 125.0MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,683 INFO L158 Benchmark]: Witness Printer took 56.22ms. Allocated memory is still 251.7MB. Free memory was 128.3MB in the beginning and 125.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:04:58,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.78ms. Allocated memory is still 174.1MB. Free memory was 145.0MB in the beginning and 132.5MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.68ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 131.9MB in the end (delta: 637.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 55.84ms. Allocated memory is still 174.1MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.74ms. Allocated memory is still 174.1MB. Free memory was 129.8MB in the beginning and 116.4MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 74891.41ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 115.7MB in the beginning and 128.3MB in the end (delta: -12.6MB). Peak memory consumption was 125.0MB. Max. memory is 16.1GB. * Witness Printer took 56.22ms. Allocated memory is still 251.7MB. Free memory was 128.3MB in the beginning and 125.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.4s, OverallIterations: 16, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 319 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 3086 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2515 mSDsCounter, 424 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2567 IncrementalHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 424 mSolverCounterUnsat, 571 mSDtfsCounter, 2567 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1867 SyntacticMatches, 10 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 16 MinimizatonAttempts, 96 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 2106 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2327 ConstructedInterpolants, 0 QuantifiedInterpolants, 21218 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2338 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 29 InterpolantComputations, 8 PerfectInterpolantSequences, 9533/10134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((d == p) && (1 <= p)) && (((long long) A + d) == (((long long) q + p) + r))) && (B == 1)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((A == r) && (p == 2)) && (d == 2)) && (q == 0)) && (B == 1)) || (((((((A == r) && (((long long) A + d) == ((long long) p + r))) && ((d / 2) <= r)) && ((d % 2) == 0)) && (q == 0)) && (B == 1)) && (4 <= (d / 2)))) || ((((((A == r) && (d == 4)) && (2 <= r)) && (q == 0)) && (B == 1)) && (p == 4))) || (((((A == r) && (d == 1)) && (q == 0)) && (B == 1)) && (p == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-17 19:04:58,775 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE