./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.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/cohencu-ll_valuebound10.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 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a --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 [2024-09-18 15:56:59,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:56:59,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:56:59,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:56:59,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:56:59,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:56:59,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:56:59,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:56:59,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:56:59,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:56:59,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:56:59,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:56:59,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:56:59,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:56:59,194 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:56:59,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:56:59,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:56:59,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:56:59,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:56:59,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:56:59,195 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:56:59,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:56:59,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:56:59,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:56:59,196 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:56:59,196 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:56:59,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:56:59,197 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:56:59,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:56:59,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:56:59,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:56:59,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:56:59,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:56:59,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:56:59,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:56:59,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:56:59,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:56:59,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:56:59,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:56:59,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:56:59,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:56:59,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:56:59,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e2993d4b0d2c145cb6ebddb0d9f125eb6995ee629adf15e0b0f7e55a8d8a49a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:56:59,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:56:59,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:56:59,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:56:59,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:56:59,421 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:56:59,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-18 15:57:00,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:57:00,826 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:57:00,826 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2024-09-18 15:57:00,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3298d260c/b7f00cda8caa42019fbcfb441c11c4f5/FLAG896fd19e1 [2024-09-18 15:57:00,842 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3298d260c/b7f00cda8caa42019fbcfb441c11c4f5 [2024-09-18 15:57:00,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:57:00,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:57:00,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:57:00,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:57:00,854 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:57:00,855 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:57:00" (1/1) ... [2024-09-18 15:57:00,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b72d545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:00, skipping insertion in model container [2024-09-18 15:57:00,857 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:57:00" (1/1) ... [2024-09-18 15:57:00,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:57:00,986 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/cohencu-ll_valuebound10.c[588,601] [2024-09-18 15:57:01,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:57:01,018 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:57:01,027 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/cohencu-ll_valuebound10.c[588,601] [2024-09-18 15:57:01,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:57:01,055 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:57:01,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01 WrapperNode [2024-09-18 15:57:01,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:57:01,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:57:01,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:57:01,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:57:01,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,070 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:57:01,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:57:01,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:57:01,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:57:01,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:57:01,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,104 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-18 15:57:01,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,117 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:57:01,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:57:01,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:57:01,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:57:01,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (1/1) ... [2024-09-18 15:57:01,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:57:01,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:01,152 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) [2024-09-18 15:57:01,153 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 [2024-09-18 15:57:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:57:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-18 15:57:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-18 15:57:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:57:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:57:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:57:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:57:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:57:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:57:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:57:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:57:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:57:01,234 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:57:01,236 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:57:01,392 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-18 15:57:01,393 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:57:01,406 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:57:01,406 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-18 15:57:01,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:01 BoogieIcfgContainer [2024-09-18 15:57:01,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:57:01,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:57:01,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:57:01,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:57:01,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:57:00" (1/3) ... [2024-09-18 15:57:01,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed81ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:57:01, skipping insertion in model container [2024-09-18 15:57:01,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:57:01" (2/3) ... [2024-09-18 15:57:01,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed81ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:57:01, skipping insertion in model container [2024-09-18 15:57:01,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:01" (3/3) ... [2024-09-18 15:57:01,413 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2024-09-18 15:57:01,424 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:57:01,425 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:57:01,466 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:57:01,471 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;@6bfc5c6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:57:01,471 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:57:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 15:57:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-18 15:57:01,479 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:01,480 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:01,480 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1802650881, now seen corresponding path program 1 times [2024-09-18 15:57:01,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737377970] [2024-09-18 15:57:01,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:01,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:01,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:01,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737377970] [2024-09-18 15:57:01,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737377970] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:01,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:57:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820686836] [2024-09-18 15:57:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:01,611 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:57:01,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:57:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:57:01,627 INFO L87 Difference]: Start difference. First operand has 34 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) 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) [2024-09-18 15:57:01,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:01,652 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2024-09-18 15:57:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:57:01,654 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 [2024-09-18 15:57:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:01,659 INFO L225 Difference]: With dead ends: 60 [2024-09-18 15:57:01,659 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 15:57:01,662 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 [2024-09-18 15:57:01,664 INFO L434 NwaCegarLoop]: 42 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, 42 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 [2024-09-18 15:57:01,665 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:01,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 15:57:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 15:57:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-18 15:57:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-09-18 15:57:01,715 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 16 [2024-09-18 15:57:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:01,716 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-09-18 15:57:01,716 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) [2024-09-18 15:57:01,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-09-18 15:57:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-18 15:57:01,717 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:01,717 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:01,744 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:57:01,744 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:01,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1133972673, now seen corresponding path program 1 times [2024-09-18 15:57:01,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:01,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552466792] [2024-09-18 15:57:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:01,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:57:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 15:57:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:01,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:01,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552466792] [2024-09-18 15:57:01,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552466792] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:01,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:01,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540678973] [2024-09-18 15:57:01,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:01,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:01,985 INFO L87 Difference]: Start difference. First operand 30 states and 40 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) [2024-09-18 15:57:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:02,080 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-18 15:57:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:02,080 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 [2024-09-18 15:57:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:02,081 INFO L225 Difference]: With dead ends: 36 [2024-09-18 15:57:02,081 INFO L226 Difference]: Without dead ends: 34 [2024-09-18 15:57:02,082 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 [2024-09-18 15:57:02,083 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:02,083 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-18 15:57:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-09-18 15:57:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-18 15:57:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-09-18 15:57:02,092 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 16 [2024-09-18 15:57:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:02,092 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-09-18 15:57:02,092 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) [2024-09-18 15:57:02,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-09-18 15:57:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-18 15:57:02,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:02,093 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] [2024-09-18 15:57:02,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:57:02,094 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:02,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash -295453008, now seen corresponding path program 1 times [2024-09-18 15:57:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333991572] [2024-09-18 15:57:02,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:02,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285010185] [2024-09-18 15:57:02,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:02,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:02,107 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) [2024-09-18 15:57:02,111 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:57:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:02,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:57:02,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:57:02,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333991572] [2024-09-18 15:57:02,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285010185] [2024-09-18 15:57:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285010185] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243695987] [2024-09-18 15:57:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:02,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:02,198 INFO L87 Difference]: Start difference. First operand 34 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, (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) [2024-09-18 15:57:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:02,248 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2024-09-18 15:57:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:02,248 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 [2024-09-18 15:57:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:02,249 INFO L225 Difference]: With dead ends: 53 [2024-09-18 15:57:02,249 INFO L226 Difference]: Without dead ends: 51 [2024-09-18 15:57:02,250 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:57:02,251 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:02,251 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-18 15:57:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2024-09-18 15:57:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-18 15:57:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-09-18 15:57:02,262 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 21 [2024-09-18 15:57:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:02,262 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-09-18 15:57:02,263 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) [2024-09-18 15:57:02,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-09-18 15:57:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-18 15:57:02,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:02,264 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] [2024-09-18 15:57:02,276 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:02,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:02,465 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:02,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 291539359, now seen corresponding path program 1 times [2024-09-18 15:57:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:02,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663309586] [2024-09-18 15:57:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:02,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943081384] [2024-09-18 15:57:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:02,482 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) [2024-09-18 15:57:02,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:57:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:02,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-18 15:57:02,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:57:02,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:02,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:02,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663309586] [2024-09-18 15:57:02,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:02,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943081384] [2024-09-18 15:57:02,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943081384] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:02,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706724115] [2024-09-18 15:57:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:02,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:02,562 INFO L87 Difference]: Start difference. First operand 41 states and 51 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) [2024-09-18 15:57:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:02,609 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-09-18 15:57:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:02,610 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 [2024-09-18 15:57:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:02,611 INFO L225 Difference]: With dead ends: 57 [2024-09-18 15:57:02,611 INFO L226 Difference]: Without dead ends: 55 [2024-09-18 15:57:02,611 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 [2024-09-18 15:57:02,612 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:02,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:57:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-18 15:57:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2024-09-18 15:57:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-18 15:57:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-09-18 15:57:02,623 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 26 [2024-09-18 15:57:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:02,623 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-09-18 15:57:02,624 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) [2024-09-18 15:57:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-09-18 15:57:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-18 15:57:02,625 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:02,625 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] [2024-09-18 15:57:02,637 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:57:02,829 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:02,830 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:02,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1228581936, now seen corresponding path program 1 times [2024-09-18 15:57:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293185954] [2024-09-18 15:57:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162991940] [2024-09-18 15:57:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:02,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:02,855 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) [2024-09-18 15:57:02,856 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:57:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:02,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-18 15:57:02,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:57:02,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-18 15:57:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293185954] [2024-09-18 15:57:02,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162991940] [2024-09-18 15:57:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162991940] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:57:02,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:57:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:57:02,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815003568] [2024-09-18 15:57:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:57:02,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:57:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:57:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:57:02,971 INFO L87 Difference]: Start difference. First operand 51 states and 66 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, (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) [2024-09-18 15:57:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:03,054 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2024-09-18 15:57:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:57:03,055 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, (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 31 [2024-09-18 15:57:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:03,056 INFO L225 Difference]: With dead ends: 65 [2024-09-18 15:57:03,056 INFO L226 Difference]: Without dead ends: 53 [2024-09-18 15:57:03,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-18 15:57:03,057 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:03,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-18 15:57:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-18 15:57:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-18 15:57:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-09-18 15:57:03,076 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2024-09-18 15:57:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:03,077 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-09-18 15:57:03,077 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, (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) [2024-09-18 15:57:03,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-09-18 15:57:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-18 15:57:03,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:03,079 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 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] [2024-09-18 15:57:03,102 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:03,279 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:03,280 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:03,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash 149987423, now seen corresponding path program 1 times [2024-09-18 15:57:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464904631] [2024-09-18 15:57:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130311130] [2024-09-18 15:57:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:03,322 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) [2024-09-18 15:57:03,326 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:57:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:03,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-18 15:57:03,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 15:57:03,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 15:57:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464904631] [2024-09-18 15:57:03,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130311130] [2024-09-18 15:57:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130311130] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:03,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-18 15:57:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771977192] [2024-09-18 15:57:03,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:03,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:57:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:57:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:57:03,636 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-18 15:57:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:03,822 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-09-18 15:57:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 15:57:03,823 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 48 [2024-09-18 15:57:03,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:03,824 INFO L225 Difference]: With dead ends: 76 [2024-09-18 15:57:03,824 INFO L226 Difference]: Without dead ends: 74 [2024-09-18 15:57:03,825 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:57:03,825 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:03,825 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 133 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:57:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-18 15:57:03,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2024-09-18 15:57:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-18 15:57:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-09-18 15:57:03,843 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 48 [2024-09-18 15:57:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:03,843 INFO L474 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-09-18 15:57:03,844 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-09-18 15:57:03,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-09-18 15:57:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-18 15:57:03,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:03,845 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 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] [2024-09-18 15:57:03,856 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:57:04,049 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:04,050 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:04,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash -883401392, now seen corresponding path program 2 times [2024-09-18 15:57:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50888798] [2024-09-18 15:57:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634263749] [2024-09-18 15:57:04,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:57:04,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:04,068 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) [2024-09-18 15:57:04,069 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:57:04,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:57:04,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:57:04,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-18 15:57:04,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-18 15:57:04,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-18 15:57:04,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50888798] [2024-09-18 15:57:04,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634263749] [2024-09-18 15:57:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634263749] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:04,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-09-18 15:57:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146615290] [2024-09-18 15:57:04,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:04,356 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-18 15:57:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-18 15:57:04,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:57:04,357 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-18 15:57:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:04,619 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2024-09-18 15:57:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 15:57:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) Word has length 53 [2024-09-18 15:57:04,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:04,622 INFO L225 Difference]: With dead ends: 90 [2024-09-18 15:57:04,622 INFO L226 Difference]: Without dead ends: 85 [2024-09-18 15:57:04,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-09-18 15:57:04,623 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:04,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:57:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-18 15:57:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-18 15:57:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 43 states have (on average 1.069767441860465) internal successors, (46), 45 states have internal predecessors, (46), 27 states have call successors, (27), 13 states have call predecessors, (27), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-18 15:57:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-09-18 15:57:04,645 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 53 [2024-09-18 15:57:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:04,645 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-09-18 15:57:04,645 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 5 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-18 15:57:04,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-09-18 15:57:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-09-18 15:57:04,647 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:04,647 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 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] [2024-09-18 15:57:04,659 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 15:57:04,851 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-18 15:57:04,852 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:04,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:04,852 INFO L85 PathProgramCache]: Analyzing trace with hash -612037408, now seen corresponding path program 1 times [2024-09-18 15:57:04,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:04,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912625990] [2024-09-18 15:57:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:04,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274974364] [2024-09-18 15:57:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:04,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:04,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:04,875 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) [2024-09-18 15:57:04,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 15:57:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:04,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 15:57:04,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-18 15:57:05,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-18 15:57:05,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:05,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912625990] [2024-09-18 15:57:05,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:05,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274974364] [2024-09-18 15:57:05,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274974364] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:05,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:05,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-09-18 15:57:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266643375] [2024-09-18 15:57:05,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:05,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 15:57:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 15:57:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-18 15:57:05,335 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-18 15:57:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:05,578 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-09-18 15:57:05,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 15:57:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 74 [2024-09-18 15:57:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:05,580 INFO L225 Difference]: With dead ends: 110 [2024-09-18 15:57:05,581 INFO L226 Difference]: Without dead ends: 108 [2024-09-18 15:57:05,581 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:57:05,581 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:05,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 170 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:57:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-09-18 15:57:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-09-18 15:57:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 57 states have internal predecessors, (58), 34 states have call successors, (34), 16 states have call predecessors, (34), 15 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-18 15:57:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2024-09-18 15:57:05,619 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 74 [2024-09-18 15:57:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:05,620 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-09-18 15:57:05,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 7 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2024-09-18 15:57:05,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2024-09-18 15:57:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-18 15:57:05,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:05,623 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2024-09-18 15:57:05,646 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:05,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:05,824 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:05,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1655042001, now seen corresponding path program 1 times [2024-09-18 15:57:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652277528] [2024-09-18 15:57:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:05,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347024174] [2024-09-18 15:57:05,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:05,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:05,863 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) [2024-09-18 15:57:05,867 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 15:57:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:05,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-18 15:57:05,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:57:06,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:57:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652277528] [2024-09-18 15:57:06,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347024174] [2024-09-18 15:57:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347024174] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:06,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:06,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2024-09-18 15:57:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435694896] [2024-09-18 15:57:06,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:06,425 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-18 15:57:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-18 15:57:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-09-18 15:57:06,426 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-18 15:57:06,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:06,744 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-09-18 15:57:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 15:57:06,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 79 [2024-09-18 15:57:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:06,746 INFO L225 Difference]: With dead ends: 122 [2024-09-18 15:57:06,746 INFO L226 Difference]: Without dead ends: 113 [2024-09-18 15:57:06,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-09-18 15:57:06,746 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:06,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 336 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:57:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-18 15:57:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2024-09-18 15:57:06,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-18 15:57:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-09-18 15:57:06,779 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 79 [2024-09-18 15:57:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:06,780 INFO L474 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-09-18 15:57:06,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 7 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2024-09-18 15:57:06,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:06,781 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-09-18 15:57:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-18 15:57:06,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:06,784 INFO L216 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:06,800 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:06,987 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:06,988 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:06,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:06,988 INFO L85 PathProgramCache]: Analyzing trace with hash -875039120, now seen corresponding path program 3 times [2024-09-18 15:57:06,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:06,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367856488] [2024-09-18 15:57:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:06,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:07,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753699840] [2024-09-18 15:57:07,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:57:07,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:07,016 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) [2024-09-18 15:57:07,021 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 15:57:07,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-18 15:57:07,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:57:07,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-18 15:57:07,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-18 15:57:07,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-18 15:57:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367856488] [2024-09-18 15:57:07,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753699840] [2024-09-18 15:57:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753699840] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:07,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2024-09-18 15:57:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091653647] [2024-09-18 15:57:07,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:07,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 15:57:07,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 15:57:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:57:07,572 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-18 15:57:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:08,260 INFO L93 Difference]: Finished difference Result 133 states and 147 transitions. [2024-09-18 15:57:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-18 15:57:08,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 85 [2024-09-18 15:57:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:08,261 INFO L225 Difference]: With dead ends: 133 [2024-09-18 15:57:08,261 INFO L226 Difference]: Without dead ends: 115 [2024-09-18 15:57:08,262 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:57:08,262 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:08,262 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 271 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:57:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-18 15:57:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-09-18 15:57:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 27 states have call successors, (27), 20 states have call predecessors, (27), 19 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-18 15:57:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2024-09-18 15:57:08,282 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 85 [2024-09-18 15:57:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:08,282 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2024-09-18 15:57:08,283 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2024-09-18 15:57:08,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2024-09-18 15:57:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-09-18 15:57:08,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:08,284 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:08,289 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:08,488 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:08,489 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:08,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2107835968, now seen corresponding path program 2 times [2024-09-18 15:57:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:08,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424027309] [2024-09-18 15:57:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:08,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030038688] [2024-09-18 15:57:08,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:57:08,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:08,517 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) [2024-09-18 15:57:08,518 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 15:57:08,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:57:08,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:57:08,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-18 15:57:08,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-09-18 15:57:08,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2024-09-18 15:57:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424027309] [2024-09-18 15:57:09,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030038688] [2024-09-18 15:57:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030038688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:09,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:09,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2024-09-18 15:57:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923216875] [2024-09-18 15:57:09,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:09,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-18 15:57:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-18 15:57:09,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:57:09,554 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-18 15:57:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:09,984 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-09-18 15:57:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-18 15:57:09,984 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 128 [2024-09-18 15:57:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:09,985 INFO L225 Difference]: With dead ends: 136 [2024-09-18 15:57:09,985 INFO L226 Difference]: Without dead ends: 134 [2024-09-18 15:57:09,986 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-18 15:57:09,986 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:09,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 299 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:57:09,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-09-18 15:57:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 117. [2024-09-18 15:57:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-18 15:57:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-09-18 15:57:10,007 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 128 [2024-09-18 15:57:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:10,007 INFO L474 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-09-18 15:57:10,007 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 10 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2024-09-18 15:57:10,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-09-18 15:57:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-18 15:57:10,009 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:10,009 INFO L216 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:10,021 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-18 15:57:10,212 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-18 15:57:10,213 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:10,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1340142287, now seen corresponding path program 2 times [2024-09-18 15:57:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:10,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651213693] [2024-09-18 15:57:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128702901] [2024-09-18 15:57:10,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:57:10,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:10,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:10,235 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) [2024-09-18 15:57:10,236 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-18 15:57:10,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:57:10,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:57:10,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-18 15:57:10,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-18 15:57:10,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 88 proven. 61 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-18 15:57:11,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651213693] [2024-09-18 15:57:11,197 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:11,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128702901] [2024-09-18 15:57:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128702901] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:11,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:11,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-18 15:57:11,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143948622] [2024-09-18 15:57:11,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:11,198 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-18 15:57:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:11,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-18 15:57:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-18 15:57:11,199 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-18 15:57:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:11,828 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2024-09-18 15:57:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-18 15:57:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) Word has length 133 [2024-09-18 15:57:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:11,829 INFO L225 Difference]: With dead ends: 149 [2024-09-18 15:57:11,829 INFO L226 Difference]: Without dead ends: 145 [2024-09-18 15:57:11,830 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2024-09-18 15:57:11,830 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:11,830 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 464 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:57:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-09-18 15:57:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2024-09-18 15:57:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 27 states have call successors, (27), 22 states have call predecessors, (27), 20 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-18 15:57:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 124 transitions. [2024-09-18 15:57:11,856 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 124 transitions. Word has length 133 [2024-09-18 15:57:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:11,856 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 124 transitions. [2024-09-18 15:57:11,856 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 14 states have call successors, (50), 3 states have call predecessors, (50), 2 states have return successors, (47), 12 states have call predecessors, (47), 14 states have call successors, (47) [2024-09-18 15:57:11,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 124 transitions. [2024-09-18 15:57:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-09-18 15:57:11,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:57:11,858 INFO L216 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:11,869 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:12,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-18 15:57:12,061 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:57:12,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 127442784, now seen corresponding path program 1 times [2024-09-18 15:57:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:57:12,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958824079] [2024-09-18 15:57:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:12,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:57:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-18 15:57:12,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685375550] [2024-09-18 15:57:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:57:12,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:12,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:57:12,086 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) [2024-09-18 15:57:12,087 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-18 15:57:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:57:12,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-18 15:57:12,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:57:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-18 15:57:12,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:57:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 45 proven. 109 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-09-18 15:57:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:57:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958824079] [2024-09-18 15:57:13,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-18 15:57:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685375550] [2024-09-18 15:57:13,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685375550] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:57:13,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-18 15:57:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-09-18 15:57:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541972538] [2024-09-18 15:57:13,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-18 15:57:13,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-18 15:57:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:57:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-18 15:57:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:57:13,285 INFO L87 Difference]: Start difference. First operand 119 states and 124 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-18 15:57:17,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-18 15:57:22,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-18 15:57:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:57:22,290 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2024-09-18 15:57:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-18 15:57:22,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) Word has length 138 [2024-09-18 15:57:22,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:57:22,292 INFO L225 Difference]: With dead ends: 134 [2024-09-18 15:57:22,292 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 15:57:22,292 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:57:22,299 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-09-18 15:57:22,299 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 348 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 260 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2024-09-18 15:57:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 15:57:22,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 15:57:22,300 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) [2024-09-18 15:57:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 15:57:22,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2024-09-18 15:57:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:57:22,300 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 15:57:22,300 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 15 states have internal predecessors, (36), 10 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (48), 9 states have call predecessors, (48), 10 states have call successors, (48) [2024-09-18 15:57:22,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:57:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 15:57:22,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 15:57:22,306 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 15:57:22,320 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-18 15:57:22,507 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:57:22,511 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-18 15:57:22,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 15:57:43,427 WARN L293 SmtUtils]: Spent 19.94s on a formula simplification. DAG size of input: 192 DAG size of output: 62 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:58:05,907 WARN L293 SmtUtils]: Spent 22.48s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:58:28,367 WARN L293 SmtUtils]: Spent 22.44s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:58:44,235 WARN L293 SmtUtils]: Spent 15.85s on a formula simplification. DAG size of input: 193 DAG size of output: 54 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:58:51,468 WARN L293 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 176 DAG size of output: 43 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:59:18,617 WARN L293 SmtUtils]: Spent 27.15s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:59:44,092 WARN L293 SmtUtils]: Spent 25.47s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 15:59:54,238 WARN L293 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 206 DAG size of output: 63 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 16:00:08,616 WARN L293 SmtUtils]: Spent 14.38s on a formula simplification. DAG size of input: 177 DAG size of output: 56 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 16:00:33,581 WARN L293 SmtUtils]: Spent 24.95s on a formula simplification. DAG size of input: 175 DAG size of output: 55 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 16:00:59,731 WARN L293 SmtUtils]: Spent 26.11s on a formula simplification. DAG size of input: 193 DAG size of output: 35 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-18 16:00:59,741 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:00:59,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:00:59 BoogieIcfgContainer [2024-09-18 16:00:59,759 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:00:59,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:00:59,759 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:00:59,759 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:00:59,760 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:57:01" (3/4) ... [2024-09-18 16:00:59,761 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:00:59,803 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:00:59,803 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:00:59,803 INFO L158 Benchmark]: Toolchain (without parser) took 238958.59ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 71.8MB in the beginning and 166.5MB in the end (delta: -94.6MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,803 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:00:59,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.76ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 59.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.11ms. Allocated memory is still 142.6MB. Free memory was 59.4MB in the beginning and 58.6MB in the end (delta: 896.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,804 INFO L158 Benchmark]: Boogie Preprocessor took 47.21ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,804 INFO L158 Benchmark]: RCFGBuilder took 287.86ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 56.8MB in the beginning and 167.6MB in the end (delta: -110.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,804 INFO L158 Benchmark]: TraceAbstraction took 238350.49ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 166.5MB in the beginning and 169.6MB in the end (delta: -3.1MB). Peak memory consumption was 174.1MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,805 INFO L158 Benchmark]: Witness Printer took 43.63ms. Allocated memory is still 293.6MB. Free memory was 169.6MB in the beginning and 166.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-18 16:00:59,806 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.76ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 59.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.11ms. Allocated memory is still 142.6MB. Free memory was 59.4MB in the beginning and 58.6MB in the end (delta: 896.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.21ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 287.86ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 56.8MB in the beginning and 167.6MB in the end (delta: -110.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 238350.49ms. Allocated memory was 201.3MB in the beginning and 293.6MB in the end (delta: 92.3MB). Free memory was 166.5MB in the beginning and 169.6MB in the end (delta: -3.1MB). Peak memory consumption was 174.1MB. Max. memory is 16.1GB. * Witness Printer took 43.63ms. Allocated memory is still 293.6MB. Free memory was 169.6MB in the beginning and 166.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.1s, OverallIterations: 13, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 93 mSDsluCounter, 2817 SdHoareTripleChecker+Invalid, 10.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2343 mSDsCounter, 374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2136 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 374 mSolverCounterUnsat, 474 mSDtfsCounter, 2136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1438 SyntacticMatches, 3 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 1664 NumberOfCodeBlocks, 1624 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1565 ConstructedInterpolants, 0 QuantifiedInterpolants, 7574 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1799 ConjunctsInSsa, 272 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 7706/8248 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: 33]: Loop Invariant Derived loop invariant: ((((((((((((__int128) 7 * z) + ((__int128) y * 46)) + (((__int128) z * x) * 3)) + ((__int128) x * 36)) == ((((2 * ((__int128) y * y)) + (((__int128) z * z) * 2)) + 8) + ((__int128) z * y))) && ((((((__int128) x * 18) + (((__int128) z * x) * 3)) + ((__int128) y * 10)) + 10) == ((2 * ((__int128) y * y)) + ((__int128) z * 3)))) && ((((__int128) n * 6) + 6) == z)) && (0 <= a)) && (((((2 * ((__int128) y * y)) + (((__int128) z * z) * 5)) + 38) + (2 * ((__int128) z * y))) == (((((__int128) 23 * z) + (((__int128) z * x) * 3)) + ((__int128) x * 54)) + ((__int128) 94 * y)))) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) && (a <= 10)) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (\old(cond) != 0) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-18 16:00:59,832 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE