./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:02:38,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:02:38,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:02:38,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:02:38,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:02:39,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:02:39,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:02:39,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:02:39,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:02:39,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:02:39,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:02:39,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:02:39,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:02:39,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:02:39,018 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:02:39,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:02:39,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:02:39,023 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:02:39,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:02:39,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:02:39,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:02:39,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:02:39,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:02:39,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:02:39,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:02:39,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:02:39,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:02:39,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:02:39,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:02:39,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:02:39,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:02:39,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:02:39,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:39,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:02:39,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:02:39,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:02:39,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:02:39,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbc7fc96c6d4708331280184201322c719c7fb1504d84fafd0b9583653597d2e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:02:39,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:02:39,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:02:39,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:02:39,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:02:39,265 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:02:39,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2024-09-25 00:02:40,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:02:40,672 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:02:40,673 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound2.c [2024-09-25 00:02:40,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/ff4660d84/911d7c02d9b04c77a736db4ee28c6eef/FLAGc334b6e55 [2024-09-25 00:02:40,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/ff4660d84/911d7c02d9b04c77a736db4ee28c6eef [2024-09-25 00:02:40,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:02:40,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:02:40,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:40,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:02:40,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:02:40,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bfc4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40, skipping insertion in model container [2024-09-25 00:02:40,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:02:40,824 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/ps6-ll_valuebound2.c[458,471] [2024-09-25 00:02:40,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:40,854 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:02:40,862 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/ps6-ll_valuebound2.c[458,471] [2024-09-25 00:02:40,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:40,885 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:02:40,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40 WrapperNode [2024-09-25 00:02:40,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:40,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:40,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:02:40,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:02:40,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,902 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:02:40,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:40,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:02:40,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:02:40,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:02:40,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,920 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]. [2024-09-25 00:02:40,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:02:40,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:02:40,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:02:40,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:02:40,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (1/1) ... [2024-09-25 00:02:40,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:40,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:40,970 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) [2024-09-25 00:02:40,975 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 [2024-09-25 00:02:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:02:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 00:02:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 00:02:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:02:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:02:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:02:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:02:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:02:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:02:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:02:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:02:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:02:41,066 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:02:41,091 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:02:41,202 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:02:41,202 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:02:41,216 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:02:41,216 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:02:41,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:41 BoogieIcfgContainer [2024-09-25 00:02:41,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:02:41,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:02:41,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:02:41,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:02:41,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:02:40" (1/3) ... [2024-09-25 00:02:41,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f32e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:41, skipping insertion in model container [2024-09-25 00:02:41,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:40" (2/3) ... [2024-09-25 00:02:41,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f32e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:41, skipping insertion in model container [2024-09-25 00:02:41,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:41" (3/3) ... [2024-09-25 00:02:41,222 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound2.c [2024-09-25 00:02:41,234 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:02:41,235 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:02:41,275 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:02:41,285 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;@47b24b1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:02:41,285 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:02:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 00:02:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 00:02:41,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:41,298 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:41,298 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:41,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -620791457, now seen corresponding path program 1 times [2024-09-25 00:02:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:41,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887101339] [2024-09-25 00:02:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:41,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:02:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:41,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:02:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:41,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:02:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:41,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887101339] [2024-09-25 00:02:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887101339] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:41,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:41,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 00:02:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713689880] [2024-09-25 00:02:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:41,473 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 00:02:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 00:02:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 00:02:41,493 INFO L87 Difference]: Start difference. First operand has 27 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:41,518 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-09-25 00:02:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 00:02:41,519 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-25 00:02:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:41,524 INFO L225 Difference]: With dead ends: 48 [2024-09-25 00:02:41,525 INFO L226 Difference]: Without dead ends: 23 [2024-09-25 00:02:41,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 00:02:41,530 INFO L434 NwaCegarLoop]: 28 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, 28 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 [2024-09-25 00:02:41,532 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-25 00:02:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-25 00:02:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 00:02:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-09-25 00:02:41,575 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2024-09-25 00:02:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:41,576 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-09-25 00:02:41,577 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, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-09-25 00:02:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-25 00:02:41,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:41,580 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:41,580 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:02:41,580 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:41,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash -959298087, now seen corresponding path program 1 times [2024-09-25 00:02:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848867428] [2024-09-25 00:02:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:41,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044895604] [2024-09-25 00:02:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:41,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:41,641 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) [2024-09-25 00:02:41,642 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:02:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:41,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 00:02:41,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:41,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:41,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848867428] [2024-09-25 00:02:41,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:41,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044895604] [2024-09-25 00:02:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044895604] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:41,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:02:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47991090] [2024-09-25 00:02:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:41,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:02:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:02:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:02:41,802 INFO L87 Difference]: Start difference. First operand 23 states and 26 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:02:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:41,855 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-25 00:02:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:02:41,855 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-25 00:02:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:41,856 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:02:41,856 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:02:41,857 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 [2024-09-25 00:02:41,857 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:41,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:02:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 00:02:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:02:41,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-25 00:02:41,868 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2024-09-25 00:02:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:41,868 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-25 00:02:41,869 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-25 00:02:41,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-25 00:02:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-25 00:02:41,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:41,872 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:41,886 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 00:02:42,076 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:42,077 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:42,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1544704875, now seen corresponding path program 1 times [2024-09-25 00:02:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025583314] [2024-09-25 00:02:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317138263] [2024-09-25 00:02:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:42,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:42,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:42,110 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) [2024-09-25 00:02:42,113 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:02:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:42,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-25 00:02:42,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:02:42,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:02:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025583314] [2024-09-25 00:02:42,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317138263] [2024-09-25 00:02:42,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317138263] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 00:02:42,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:02:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-25 00:02:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279642861] [2024-09-25 00:02:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:42,301 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:02:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:02:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:02:42,302 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-25 00:02:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:42,336 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-09-25 00:02:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:02:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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 28 [2024-09-25 00:02:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:42,337 INFO L225 Difference]: With dead ends: 36 [2024-09-25 00:02:42,337 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 00:02:42,337 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:02:42,338 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:42,339 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 00:02:42,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 00:02:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:02:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-09-25 00:02:42,347 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2024-09-25 00:02:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:42,347 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-09-25 00:02:42,347 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-25 00:02:42,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-09-25 00:02:42,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-25 00:02:42,349 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:42,349 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:42,363 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:02:42,552 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:42,553 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:42,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash 21814286, now seen corresponding path program 1 times [2024-09-25 00:02:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:42,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199104759] [2024-09-25 00:02:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:02:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237646357] [2024-09-25 00:02:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:42,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:42,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:42,574 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) [2024-09-25 00:02:42,575 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:02:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:42,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 00:02:42,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:02:42,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:02:43,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199104759] [2024-09-25 00:02:43,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237646357] [2024-09-25 00:02:43,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237646357] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:02:43,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:02:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-25 00:02:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221107349] [2024-09-25 00:02:43,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:02:43,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:02:43,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:02:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:02:43,145 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:02:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:43,383 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-09-25 00:02:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:02:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-09-25 00:02:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:43,385 INFO L225 Difference]: With dead ends: 53 [2024-09-25 00:02:43,385 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 00:02:43,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-25 00:02:43,386 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:43,386 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:02:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 00:02:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 00:02:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:02:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2024-09-25 00:02:43,400 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 39 [2024-09-25 00:02:43,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:43,401 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2024-09-25 00:02:43,401 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 00:02:43,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2024-09-25 00:02:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-25 00:02:43,403 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:43,403 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:43,428 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:02:43,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:43,604 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:43,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash -244405920, now seen corresponding path program 2 times [2024-09-25 00:02:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:02:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402359428] [2024-09-25 00:02:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:02:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:02:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:02:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-25 00:02:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-25 00:02:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-25 00:02:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-25 00:02:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-25 00:02:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-25 00:02:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-25 00:02:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-25 00:02:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402359428] [2024-09-25 00:02:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402359428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:02:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802104170] [2024-09-25 00:02:43,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:02:43,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:43,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:43,915 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) [2024-09-25 00:02:43,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:02:43,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:02:43,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:02:43,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:02:43,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-09-25 00:02:44,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-09-25 00:02:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802104170] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:02:44,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:02:44,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-09-25 00:02:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535113094] [2024-09-25 00:02:44,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:02:44,200 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 00:02:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:02:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 00:02:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:02:44,205 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-09-25 00:02:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:44,266 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2024-09-25 00:02:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:02:44,267 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) Word has length 60 [2024-09-25 00:02:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:44,267 INFO L225 Difference]: With dead ends: 51 [2024-09-25 00:02:44,267 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:02:44,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:02:44,269 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:44,269 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:02:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:02:44,270 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) [2024-09-25 00:02:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:02:44,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2024-09-25 00:02:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:44,270 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:02:44,270 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 16 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 16 states have call predecessors, (21), 16 states have call successors, (21) [2024-09-25 00:02:44,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:02:44,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:02:44,273 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:02:44,286 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:02:44,474 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:02:44,477 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-25 00:02:44,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:02:45,325 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:02:45,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:02:45 BoogieIcfgContainer [2024-09-25 00:02:45,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:02:45,344 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:02:45,344 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:02:45,345 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:02:45,345 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:41" (3/4) ... [2024-09-25 00:02:45,350 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:02:45,401 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:02:45,402 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:02:45,402 INFO L158 Benchmark]: Toolchain (without parser) took 4711.51ms. Allocated memory was 190.8MB in the beginning and 266.3MB in the end (delta: 75.5MB). Free memory was 120.9MB in the beginning and 160.6MB in the end (delta: -39.7MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,402 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:02:45,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.48ms. Allocated memory is still 190.8MB. Free memory was 120.6MB in the beginning and 109.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.05ms. Allocated memory is still 190.8MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 946.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,403 INFO L158 Benchmark]: Boogie Preprocessor took 26.95ms. Allocated memory is still 190.8MB. Free memory was 108.0MB in the beginning and 106.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,403 INFO L158 Benchmark]: RCFGBuilder took 284.29ms. Allocated memory is still 190.8MB. Free memory was 106.1MB in the beginning and 155.0MB in the end (delta: -48.9MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,404 INFO L158 Benchmark]: TraceAbstraction took 4125.89ms. Allocated memory was 190.8MB in the beginning and 266.3MB in the end (delta: 75.5MB). Free memory was 154.4MB in the beginning and 162.7MB in the end (delta: -8.3MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,404 INFO L158 Benchmark]: Witness Printer took 57.46ms. Allocated memory is still 266.3MB. Free memory was 162.7MB in the beginning and 160.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:45,405 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.48ms. Allocated memory is still 190.8MB. Free memory was 120.6MB in the beginning and 109.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.05ms. Allocated memory is still 190.8MB. Free memory was 109.0MB in the beginning and 108.0MB in the end (delta: 946.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.95ms. Allocated memory is still 190.8MB. Free memory was 108.0MB in the beginning and 106.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.29ms. Allocated memory is still 190.8MB. Free memory was 106.1MB in the beginning and 155.0MB in the end (delta: -48.9MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4125.89ms. Allocated memory was 190.8MB in the beginning and 266.3MB in the end (delta: 75.5MB). Free memory was 154.4MB in the beginning and 162.7MB in the end (delta: -8.3MB). Peak memory consumption was 67.2MB. Max. memory is 16.1GB. * Witness Printer took 57.46ms. Allocated memory is still 266.3MB. Free memory was 162.7MB in the beginning and 160.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 490 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 236 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 109 mSDtfsCounter, 236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 313 GetRequests, 265 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 347 ConstructedInterpolants, 0 QuantifiedInterpolants, 1317 SizeOfPredicates, 5 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 360/392 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: 28]: Loop Invariant Derived loop invariant: ((((((0 <= k) && (((__int128) y * y) == ((__int128) k * y))) && ((c + ((__int128) c * y)) == (y + ((__int128) y * y)))) && (k <= 2)) && ((((2 * ((((((__int128) y * y) * y) * y) * y) * y)) + (6 * (((((__int128) y * y) * y) * y) * y))) + (5 * ((((__int128) y * y) * y) * y))) == (((__int128) x * 12) + ((__int128) y * y)))) || (((((1 <= k) && (y == 1)) && (k <= 2)) && (x == 1)) && (c == 1))) - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:02:45,422 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE