./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i --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 27b49876 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/divbin_valuebound1.i -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 ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 --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-27b4987-m [2024-09-21 11:50:51,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:50:51,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:50:51,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:50:51,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:50:51,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:50:51,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:50:51,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:50:51,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:50:51,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:50:51,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:50:51,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:50:51,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:50:51,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:50:51,972 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:50:51,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:50:51,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:50:51,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:50:51,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:50:51,974 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:50:51,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:50:51,975 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:50:51,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:50:51,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:50:51,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:50:51,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:50:51,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:50:51,977 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:50:51,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:50:51,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:50:51,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:50:51,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:50:51,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:50:51,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:50:51,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:50:51,978 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:50:51,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:50:51,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:50:51,979 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:50:51,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:50:51,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:50:51,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:50:51,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:50:52,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:50:52,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:50:52,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:50:52,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:50:52,181 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:50:52,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-21 11:50:53,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:50:53,581 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:50:53,581 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-09-21 11:50:53,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8712f6733/02f79e036b6d4fbf83569ee534256035/FLAGdc7d4ca58 [2024-09-21 11:50:53,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8712f6733/02f79e036b6d4fbf83569ee534256035 [2024-09-21 11:50:53,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:50:53,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:50:53,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:50:53,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:50:53,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:50:53,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f132c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53, skipping insertion in model container [2024-09-21 11:50:53,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:50:53,766 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/divbin_valuebound1.i[950,963] [2024-09-21 11:50:53,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:50:53,796 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:50:53,806 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/divbin_valuebound1.i[950,963] [2024-09-21 11:50:53,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:50:53,829 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:50:53,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53 WrapperNode [2024-09-21 11:50:53,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:50:53,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:50:53,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:50:53,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:50:53,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,847 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:50:53,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:50:53,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:50:53,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:50:53,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:50:53,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,871 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]. [2024-09-21 11:50:53,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:50:53,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:50:53,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:50:53,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:50:53,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (1/1) ... [2024-09-21 11:50:53,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:50:53,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:50:53,922 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) [2024-09-21 11:50:53,936 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 [2024-09-21 11:50:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:50:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:50:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:50:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:50:53,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:50:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:50:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:50:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:50:53,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:50:53,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:50:53,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:50:53,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:50:54,034 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:50:54,036 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:50:54,177 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 11:50:54,177 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:50:54,197 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:50:54,198 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-21 11:50:54,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:50:54 BoogieIcfgContainer [2024-09-21 11:50:54,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:50:54,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:50:54,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:50:54,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:50:54,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:50:53" (1/3) ... [2024-09-21 11:50:54,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfeb5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:50:54, skipping insertion in model container [2024-09-21 11:50:54,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:50:53" (2/3) ... [2024-09-21 11:50:54,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfeb5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:50:54, skipping insertion in model container [2024-09-21 11:50:54,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:50:54" (3/3) ... [2024-09-21 11:50:54,205 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2024-09-21 11:50:54,216 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:50:54,217 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:50:54,268 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:50:54,273 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;@6d5f6dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:50:54,273 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:50:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-21 11:50:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-21 11:50:54,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:50:54,284 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:50:54,285 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:50:54,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -923394275, now seen corresponding path program 1 times [2024-09-21 11:50:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:50:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190094970] [2024-09-21 11:50:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:50:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:50:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:50:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:50:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:50:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:50:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:50:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:50:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190094970] [2024-09-21 11:50:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190094970] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:50:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:50:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:50:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624886968] [2024-09-21 11:50:54,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:50:54,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:50:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:50:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:50:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:50:54,502 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-21 11:50:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:50:54,527 INFO L93 Difference]: Finished difference Result 58 states and 87 transitions. [2024-09-21 11:50:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:50:54,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-09-21 11:50:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:50:54,533 INFO L225 Difference]: With dead ends: 58 [2024-09-21 11:50:54,533 INFO L226 Difference]: Without dead ends: 28 [2024-09-21 11:50:54,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:50:54,539 INFO L434 NwaCegarLoop]: 36 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, 36 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 [2024-09-21 11:50:54,539 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:50:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-21 11:50:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-21 11:50:54,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 11:50:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-21 11:50:54,564 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 33 [2024-09-21 11:50:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:50:54,565 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-21 11:50:54,565 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-21 11:50:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-21 11:50:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-21 11:50:54,567 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:50:54,567 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:50:54,567 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:50:54,568 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:50:54,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1193042891, now seen corresponding path program 1 times [2024-09-21 11:50:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:50:54,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818273492] [2024-09-21 11:50:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:50:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:50:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973491781] [2024-09-21 11:50:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:54,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:50:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:50:54,619 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) [2024-09-21 11:50:54,621 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:50:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:54,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 11:50:54,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:50:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:50:55,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:50:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:50:55,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:50:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818273492] [2024-09-21 11:50:55,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:50:55,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973491781] [2024-09-21 11:50:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973491781] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 11:50:55,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:50:55,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-09-21 11:50:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494258977] [2024-09-21 11:50:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:50:55,242 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:50:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:50:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:50:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:50:55,243 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-21 11:50:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:50:55,655 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-21 11:50:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:50:55,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-09-21 11:50:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:50:55,656 INFO L225 Difference]: With dead ends: 40 [2024-09-21 11:50:55,656 INFO L226 Difference]: Without dead ends: 37 [2024-09-21 11:50:55,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:50:55,658 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:50:55,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 99 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:50:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-21 11:50:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-21 11:50:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:50:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-09-21 11:50:55,669 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 34 [2024-09-21 11:50:55,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:50:55,670 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-09-21 11:50:55,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-21 11:50:55,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-09-21 11:50:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-21 11:50:55,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:50:55,672 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:50:55,687 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:50:55,875 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 [2024-09-21 11:50:55,877 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:50:55,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash 336856806, now seen corresponding path program 1 times [2024-09-21 11:50:55,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:50:55,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880156477] [2024-09-21 11:50:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:55,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:50:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:50:55,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504201387] [2024-09-21 11:50:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:55,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:50:55,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:50:55,913 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) [2024-09-21 11:50:55,915 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:50:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:55,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:50:55,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:50:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-21 11:50:56,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:50:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-21 11:50:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:50:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880156477] [2024-09-21 11:50:56,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:50:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504201387] [2024-09-21 11:50:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504201387] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 11:50:56,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:50:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2024-09-21 11:50:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826522803] [2024-09-21 11:50:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:50:56,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:50:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:50:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:50:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-21 11:50:56,341 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-21 11:50:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:50:57,126 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-09-21 11:50:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:50:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2024-09-21 11:50:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:50:57,128 INFO L225 Difference]: With dead ends: 47 [2024-09-21 11:50:57,128 INFO L226 Difference]: Without dead ends: 44 [2024-09-21 11:50:57,128 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:50:57,129 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-21 11:50:57,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-21 11:50:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-21 11:50:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2024-09-21 11:50:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:50:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-09-21 11:50:57,137 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 36 [2024-09-21 11:50:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:50:57,137 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-09-21 11:50:57,138 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-21 11:50:57,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-09-21 11:50:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-21 11:50:57,139 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:50:57,139 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:50:57,155 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:50:57,339 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 [2024-09-21 11:50:57,340 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:50:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 513117096, now seen corresponding path program 1 times [2024-09-21 11:50:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:50:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064996237] [2024-09-21 11:50:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:57,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:50:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:50:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:50:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:50:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:50:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:50:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:50:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:50:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:50:57,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064996237] [2024-09-21 11:50:57,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064996237] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:50:57,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:50:57,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-21 11:50:57,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863733661] [2024-09-21 11:50:57,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:50:57,741 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-21 11:50:57,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:50:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-21 11:50:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-21 11:50:57,742 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-21 11:50:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:50:57,771 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-09-21 11:50:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-21 11:50:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2024-09-21 11:50:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:50:57,774 INFO L225 Difference]: With dead ends: 51 [2024-09-21 11:50:57,774 INFO L226 Difference]: Without dead ends: 37 [2024-09-21 11:50:57,774 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-21 11:50:57,775 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:50:57,776 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:50:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-21 11:50:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-21 11:50:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:50:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-09-21 11:50:57,790 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 42 [2024-09-21 11:50:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:50:57,790 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-09-21 11:50:57,790 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-21 11:50:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-09-21 11:50:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 11:50:57,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:50:57,792 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2024-09-21 11:50:57,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-21 11:50:57,793 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:50:57,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:50:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 980542403, now seen corresponding path program 1 times [2024-09-21 11:50:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:50:57,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802468367] [2024-09-21 11:50:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:57,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:50:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:50:57,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628728850] [2024-09-21 11:50:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:50:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:50:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:50:57,825 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) [2024-09-21 11:50:57,826 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:50:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:50:57,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-21 11:50:57,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:50:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-21 11:50:58,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:51:18,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:51:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802468367] [2024-09-21 11:51:18,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:51:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628728850] [2024-09-21 11:51:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628728850] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:51:18,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:51:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-09-21 11:51:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157254269] [2024-09-21 11:51:18,735 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-21 11:51:18,735 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 11:51:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:51:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 11:51:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=194, Unknown=5, NotChecked=0, Total=240 [2024-09-21 11:51:18,736 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-21 11:51:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:51:18,891 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2024-09-21 11:51:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:51:18,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2024-09-21 11:51:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:51:18,893 INFO L225 Difference]: With dead ends: 52 [2024-09-21 11:51:18,893 INFO L226 Difference]: Without dead ends: 48 [2024-09-21 11:51:18,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=47, Invalid=220, Unknown=5, NotChecked=0, Total=272 [2024-09-21 11:51:18,894 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:51:18,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 128 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:51:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-21 11:51:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-09-21 11:51:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 11 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-21 11:51:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-21 11:51:18,903 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2024-09-21 11:51:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:51:18,903 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-21 11:51:18,903 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-21 11:51:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:51:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-21 11:51:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-21 11:51:18,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:51:18,904 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1] [2024-09-21 11:51:18,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 11:51:19,108 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 [2024-09-21 11:51:19,109 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:51:19,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:51:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2109238368, now seen corresponding path program 2 times [2024-09-21 11:51:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:51:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177948913] [2024-09-21 11:51:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:51:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:51:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:51:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:51:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:51:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:51:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:51:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:51:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:51:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:51:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:51:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:51:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177948913] [2024-09-21 11:51:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177948913] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:51:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364794933] [2024-09-21 11:51:19,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:51:19,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:51:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:51:19,472 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) [2024-09-21 11:51:19,472 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:51:19,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:51:19,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:51:19,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-21 11:51:19,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:51:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-21 11:51:19,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:51:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-21 11:51:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364794933] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:51:20,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:51:20,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 23 [2024-09-21 11:51:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616263584] [2024-09-21 11:51:20,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:51:20,717 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-21 11:51:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:51:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-21 11:51:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:51:20,718 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-21 11:51:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:51:21,018 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2024-09-21 11:51:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-21 11:51:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 52 [2024-09-21 11:51:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:51:21,021 INFO L225 Difference]: With dead ends: 69 [2024-09-21 11:51:21,021 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:51:21,021 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:51:21,022 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 37 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:51:21,022 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 213 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:51:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:51:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:51:21,024 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) [2024-09-21 11:51:21,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:51:21,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-09-21 11:51:21,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:51:21,024 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:51:21,024 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.238095238095238) internal successors, (47), 19 states have internal predecessors, (47), 11 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-21 11:51:21,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:51:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:51:21,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:51:21,026 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:51:21,036 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:51:21,231 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 [2024-09-21 11:51:21,234 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-09-21 11:51:21,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:51:23,285 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:51:23,301 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-21 11:51:23,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:51:23 BoogieIcfgContainer [2024-09-21 11:51:23,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:51:23,305 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:51:23,305 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:51:23,306 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:51:23,306 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:50:54" (3/4) ... [2024-09-21 11:51:23,307 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:51:23,351 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:51:23,352 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:51:23,352 INFO L158 Benchmark]: Toolchain (without parser) took 29745.44ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 65.9MB in the beginning and 130.1MB in the end (delta: -64.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:51:23,355 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:51:23,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.26ms. Allocated memory is still 134.2MB. Free memory was 65.6MB in the beginning and 98.4MB in the end (delta: -32.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.47ms. Allocated memory is still 134.2MB. Free memory was 98.4MB in the beginning and 97.5MB in the end (delta: 878.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,356 INFO L158 Benchmark]: Boogie Preprocessor took 33.28ms. Allocated memory is still 134.2MB. Free memory was 97.5MB in the beginning and 95.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,356 INFO L158 Benchmark]: RCFGBuilder took 316.12ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 82.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,356 INFO L158 Benchmark]: TraceAbstraction took 29105.19ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 82.1MB in the beginning and 132.2MB in the end (delta: -50.1MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,356 INFO L158 Benchmark]: Witness Printer took 46.43ms. Allocated memory is still 195.0MB. Free memory was 132.2MB in the beginning and 130.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:51:23,358 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 134.2MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.26ms. Allocated memory is still 134.2MB. Free memory was 65.6MB in the beginning and 98.4MB in the end (delta: -32.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.47ms. Allocated memory is still 134.2MB. Free memory was 98.4MB in the beginning and 97.5MB in the end (delta: 878.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.28ms. Allocated memory is still 134.2MB. Free memory was 97.5MB in the beginning and 95.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.12ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 82.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 29105.19ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 82.1MB in the beginning and 132.2MB in the end (delta: -50.1MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. * Witness Printer took 46.43ms. Allocated memory is still 195.0MB. Free memory was 132.2MB in the beginning and 130.1MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 21]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 653 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 491 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 162 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 287 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 405 ConstructedInterpolants, 4 QuantifiedInterpolants, 2190 SizeOfPredicates, 9 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 255/308 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: 37]: Loop Invariant Derived loop invariant: (((((((B == 1) && (r == A)) && (0 <= (2 * (((b / 2) + ((long long) -1 * B)) / 4294967296)))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0)) || ((((((b == 1) && (r == A)) && (0 <= 0)) && (A <= 1)) && (B == b)) && (q == 0))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((B == 1) && (b == 1)) && (r <= 0)) && (r == A)) && (q == 0)) || ((((0 <= 0) && (0 <= 0)) && (A == ((r + ((unsigned long long) b * q)) % 4294967296))) && (B == b))) || ((((((B == 1) && (r == A)) && (0 <= (2 * (((b / 2) + ((long long) -1 * B)) / 4294967296)))) && (A <= 1)) && (b <= ((long long) B * 2))) && (q == 0))) || (((((B == 1) && (b == 1)) && (r <= 0)) && (A == (((long long) r + 1) % 4294967296))) && (q == 1))) - ProcedureContractResult [Line: 15]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 18]: 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! [2024-09-21 11:51:23,403 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