./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 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/prod4br-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 deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:18:47,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:18:47,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:18:47,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:18:47,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:18:47,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:18:47,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:18:47,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:18:47,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:18:47,293 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:18:47,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:18:47,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:18:47,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:18:47,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:18:47,294 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:18:47,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:18:47,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:18:47,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:18:47,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:18:47,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:18:47,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:18:47,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:18:47,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:18:47,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:18:47,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:18:47,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:18:47,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:18:47,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:18:47,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:18:47,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:18:47,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:18:47,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:18:47,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:18:47,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:18:47,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:18:47,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:18:47,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:18:47,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:18:47,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:18:47,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:18:47,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:18:47,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:18:47,303 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 -> deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 11:18:47,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:18:47,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:18:47,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:18:47,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:18:47,608 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:18:47,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2024-09-25 11:18:49,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:18:49,328 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:18:49,329 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2024-09-25 11:18:49,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b1b82735f/83e1e9a068f64587aaf143788919ad2b/FLAG7346dace9 [2024-09-25 11:18:49,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b1b82735f/83e1e9a068f64587aaf143788919ad2b [2024-09-25 11:18:49,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:18:49,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:18:49,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:18:49,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:18:49,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:18:49,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72df6bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49, skipping insertion in model container [2024-09-25 11:18:49,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:18:49,564 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/prod4br-ll_valuebound2.c[524,537] [2024-09-25 11:18:49,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:18:49,602 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:18:49,614 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/prod4br-ll_valuebound2.c[524,537] [2024-09-25 11:18:49,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:18:49,642 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:18:49,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49 WrapperNode [2024-09-25 11:18:49,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:18:49,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:18:49,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:18:49,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:18:49,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,661 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:18:49,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:18:49,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:18:49,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:18:49,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:18:49,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,674 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,694 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 11:18:49,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:18:49,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:18:49,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:18:49,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:18:49,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (1/1) ... [2024-09-25 11:18:49,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:18:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:49,748 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 11:18:49,754 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 11:18:49,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:18:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 11:18:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 11:18:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:18:49,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:18:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:18:49,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:18:49,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:18:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:18:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:18:49,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 11:18:49,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 11:18:49,855 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:18:49,857 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:18:50,068 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-25 11:18:50,069 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:18:50,109 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:18:50,109 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 11:18:50,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:50 BoogieIcfgContainer [2024-09-25 11:18:50,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:18:50,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:18:50,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:18:50,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:18:50,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:49" (1/3) ... [2024-09-25 11:18:50,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eebaf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:50, skipping insertion in model container [2024-09-25 11:18:50,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49" (2/3) ... [2024-09-25 11:18:50,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eebaf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:50, skipping insertion in model container [2024-09-25 11:18:50,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:50" (3/3) ... [2024-09-25 11:18:50,122 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2024-09-25 11:18:50,136 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:18:50,137 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:18:50,196 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:18:50,203 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;@13c4bdfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:18:50,204 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:18:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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) [2024-09-25 11:18:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:18:50,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:50,215 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:18:50,216 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:50,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -917275374, now seen corresponding path program 1 times [2024-09-25 11:18:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925952035] [2024-09-25 11:18:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:18:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:18:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-25 11:18:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 11:18:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:18:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925952035] [2024-09-25 11:18:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925952035] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:18:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:18:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 11:18:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024110796] [2024-09-25 11:18:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:18:50,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 11:18:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:50,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 11:18:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 11:18:50,443 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:18:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:50,490 INFO L93 Difference]: Finished difference Result 58 states and 85 transitions. [2024-09-25 11:18:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 11:18:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-09-25 11:18:50,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:50,500 INFO L225 Difference]: With dead ends: 58 [2024-09-25 11:18:50,501 INFO L226 Difference]: Without dead ends: 28 [2024-09-25 11:18:50,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 11:18:50,507 INFO L434 NwaCegarLoop]: 37 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, 37 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 11:18:50,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:18:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-25 11:18:50,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-25 11:18:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 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) [2024-09-25 11:18:50,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-25 11:18:50,551 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 27 [2024-09-25 11:18:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:50,552 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-25 11:18:50,553 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 11:18:50,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-25 11:18:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 11:18:50,556 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:50,556 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:18:50,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:18:50,557 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2088206790, now seen corresponding path program 1 times [2024-09-25 11:18:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689879729] [2024-09-25 11:18:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:18:50,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978941415] [2024-09-25 11:18:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:50,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:18:50,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:50,610 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 11:18:50,612 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 11:18:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:50,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-25 11:18:50,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:18:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:18:50,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:18:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:18:51,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:51,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689879729] [2024-09-25 11:18:51,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:18:51,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978941415] [2024-09-25 11:18:51,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978941415] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:18:51,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:18:51,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2024-09-25 11:18:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352481117] [2024-09-25 11:18:51,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:18:51,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:18:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:18:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-09-25 11:18:51,028 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:18:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:51,142 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2024-09-25 11:18:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:18:51,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-09-25 11:18:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:51,144 INFO L225 Difference]: With dead ends: 34 [2024-09-25 11:18:51,144 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 11:18:51,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:18:51,145 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:18:51,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 84 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:18:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 11:18:51,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-25 11:18:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 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 11:18:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-09-25 11:18:51,162 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 27 [2024-09-25 11:18:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:51,163 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-09-25 11:18:51,163 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-25 11:18:51,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-09-25 11:18:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-25 11:18:51,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:51,165 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:18:51,181 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 11:18:51,365 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 11:18:51,366 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:51,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:51,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1553375179, now seen corresponding path program 1 times [2024-09-25 11:18:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:51,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715777916] [2024-09-25 11:18:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:51,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:18:51,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834952361] [2024-09-25 11:18:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:51,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:18:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:51,408 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 11:18:51,411 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 11:18:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:51,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-25 11:18:51,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:18:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:18:51,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:18:51,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:18:51,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:51,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715777916] [2024-09-25 11:18:51,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:18:51,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834952361] [2024-09-25 11:18:51,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834952361] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:18:51,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 11:18:51,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2024-09-25 11:18:51,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870089482] [2024-09-25 11:18:51,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 11:18:51,862 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 11:18:51,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 11:18:51,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-09-25 11:18:51,863 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:18:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:52,314 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2024-09-25 11:18:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:18:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2024-09-25 11:18:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:52,317 INFO L225 Difference]: With dead ends: 50 [2024-09-25 11:18:52,317 INFO L226 Difference]: Without dead ends: 46 [2024-09-25 11:18:52,317 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-09-25 11:18:52,318 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 11:18:52,320 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 178 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 11:18:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-25 11:18:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2024-09-25 11:18:52,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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 11:18:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-09-25 11:18:52,340 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 33 [2024-09-25 11:18:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:52,340 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-09-25 11:18:52,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2024-09-25 11:18:52,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-09-25 11:18:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-25 11:18:52,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:18:52,343 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:18:52,355 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 11:18:52,543 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 11:18:52,544 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:18:52,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:52,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1468428293, now seen corresponding path program 1 times [2024-09-25 11:18:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:18:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268150735] [2024-09-25 11:18:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:18:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 11:18:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018158709] [2024-09-25 11:18:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:18:52,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:18:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:18:52,569 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 11:18:52,578 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 11:18:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:18:52,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 11:18:52,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:18:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 11:18:52,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:18:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-25 11:18:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:18:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268150735] [2024-09-25 11:18:52,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 11:18:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018158709] [2024-09-25 11:18:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018158709] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-25 11:18:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:18:52,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-09-25 11:18:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918184704] [2024-09-25 11:18:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:18:52,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:18:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:18:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:18:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-25 11:18:52,814 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 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) [2024-09-25 11:18:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:18:52,891 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-09-25 11:18:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:18:52,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 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 38 [2024-09-25 11:18:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:18:52,892 INFO L225 Difference]: With dead ends: 34 [2024-09-25 11:18:52,892 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:18:52,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-25 11:18:52,893 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:18:52,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:18:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:18:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:18:52,895 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 11:18:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:18:52,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-09-25 11:18:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:18:52,895 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:18:52,895 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 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) [2024-09-25 11:18:52,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:18:52,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:18:52,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:18:52,902 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:18:52,924 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 11:18:53,103 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 11:18:53,107 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-25 11:18:53,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:18:53,397 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:18:53,413 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,414 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,415 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,415 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,415 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,415 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,416 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,417 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:18:53,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:18:53 BoogieIcfgContainer [2024-09-25 11:18:53,418 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:18:53,418 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:18:53,418 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:18:53,418 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:18:53,419 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:50" (3/4) ... [2024-09-25 11:18:53,420 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:18:53,471 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:18:53,472 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:18:53,475 INFO L158 Benchmark]: Toolchain (without parser) took 4115.01ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 36.5MB in the beginning and 57.1MB in the end (delta: -20.6MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,475 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:18:53,475 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.41ms. Allocated memory is still 65.0MB. Free memory was 36.4MB in the beginning and 42.2MB in the end (delta: -5.8MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.83ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 41.2MB in the end (delta: 943.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,476 INFO L158 Benchmark]: Boogie Preprocessor took 44.70ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 39.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:18:53,476 INFO L158 Benchmark]: RCFGBuilder took 402.38ms. Allocated memory is still 65.0MB. Free memory was 39.4MB in the beginning and 43.3MB in the end (delta: -3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,476 INFO L158 Benchmark]: TraceAbstraction took 3305.62ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 42.7MB in the beginning and 60.0MB in the end (delta: -17.3MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,476 INFO L158 Benchmark]: Witness Printer took 53.53ms. Allocated memory is still 86.0MB. Free memory was 60.0MB in the beginning and 57.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 11:18:53,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 48.2MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.41ms. Allocated memory is still 65.0MB. Free memory was 36.4MB in the beginning and 42.2MB in the end (delta: -5.8MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.83ms. Allocated memory is still 65.0MB. Free memory was 42.2MB in the beginning and 41.2MB in the end (delta: 943.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.70ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 39.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.38ms. Allocated memory is still 65.0MB. Free memory was 39.4MB in the beginning and 43.3MB in the end (delta: -3.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3305.62ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 42.7MB in the beginning and 60.0MB in the end (delta: -17.3MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. * Witness Printer took 53.53ms. Allocated memory is still 86.0MB. Free memory was 60.0MB in the beginning and 57.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * 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: 14]: 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: 2.9s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 300 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 311 IncrementalHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 110 mSDtfsCounter, 311 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 171 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 216 ConstructedInterpolants, 1 QuantifiedInterpolants, 510 SizeOfPredicates, 12 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 96/104 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: 34]: Loop Invariant Derived loop invariant: (((q + (((__int128) b * a) * p)) == ((long long) y * x)) && (1 <= y)) - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 11]: 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 11:18:53,499 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