./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/prodbin-ll.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/prodbin-ll.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 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 --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 10:42:06,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:42:06,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 10:42:06,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:42:06,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:42:06,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:42:06,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:42:06,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:42:06,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:42:06,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:42:06,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:42:06,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:42:06,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:42:06,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:42:06,689 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:42:06,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:42:06,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:42:06,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:42:06,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 10:42:06,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:42:06,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:42:06,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:42:06,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:42:06,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:42:06,695 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:42:06,695 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:42:06,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:42:06,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:42:06,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:42:06,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:42:06,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:42:06,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:42:06,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:42:06,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:42:06,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:42:06,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:42:06,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 10:42:06,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 10:42:06,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:42:06,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:42:06,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:42:06,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:42:06,701 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 -> 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 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 10:42:06,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:42:07,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:42:07,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:42:07,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:42:07,006 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:42:07,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/prodbin-ll.c [2024-09-25 10:42:08,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:42:08,712 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:42:08,712 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/prodbin-ll.c [2024-09-25 10:42:08,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2dc5635be/d1f23a6c87f8401899892b15dfd34106/FLAGe76e2cc84 [2024-09-25 10:42:08,741 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2dc5635be/d1f23a6c87f8401899892b15dfd34106 [2024-09-25 10:42:08,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:42:08,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:42:08,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:42:08,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:42:08,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:42:08,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:42:08" (1/1) ... [2024-09-25 10:42:08,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed745fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:08, skipping insertion in model container [2024-09-25 10:42:08,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:42:08" (1/1) ... [2024-09-25 10:42:08,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:42:08,973 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/prodbin-ll.c[537,550] [2024-09-25 10:42:08,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:42:09,005 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:42:09,018 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/prodbin-ll.c[537,550] [2024-09-25 10:42:09,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:42:09,041 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:42:09,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09 WrapperNode [2024-09-25 10:42:09,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:42:09,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:42:09,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:42:09,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:42:09,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,062 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:42:09,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:42:09,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:42:09,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:42:09,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:42:09,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,094 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 10:42:09,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:42:09,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:42:09,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:42:09,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:42:09,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (1/1) ... [2024-09-25 10:42:09,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:42:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:09,148 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 10:42:09,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 10:42:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:42:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 10:42:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 10:42:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:42:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:42:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 10:42:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:42:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:42:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:42:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:42:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:42:09,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:42:09,259 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:42:09,261 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:42:09,454 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 10:42:09,455 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:42:09,479 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:42:09,480 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 10:42:09,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:42:09 BoogieIcfgContainer [2024-09-25 10:42:09,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:42:09,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:42:09,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:42:09,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:42:09,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:42:08" (1/3) ... [2024-09-25 10:42:09,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52556a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:42:09, skipping insertion in model container [2024-09-25 10:42:09,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:42:09" (2/3) ... [2024-09-25 10:42:09,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52556a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:42:09, skipping insertion in model container [2024-09-25 10:42:09,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:42:09" (3/3) ... [2024-09-25 10:42:09,489 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll.c [2024-09-25 10:42:09,505 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:42:09,505 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:42:09,568 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:42:09,576 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;@48edad21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:42:09,577 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:42:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:42:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 10:42:09,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:09,590 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:09,591 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:09,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1759225501, now seen corresponding path program 1 times [2024-09-25 10:42:09,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:09,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756503718] [2024-09-25 10:42:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:09,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 10:42:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:09,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 10:42:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:09,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:09,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756503718] [2024-09-25 10:42:09,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756503718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:42:09,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:42:09,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:42:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255009149] [2024-09-25 10:42:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:42:09,795 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:42:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:42:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:42:09,821 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:42:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:09,847 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-09-25 10:42:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:42:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 10:42:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:09,856 INFO L225 Difference]: With dead ends: 46 [2024-09-25 10:42:09,857 INFO L226 Difference]: Without dead ends: 23 [2024-09-25 10:42:09,859 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:42:09,863 INFO L434 NwaCegarLoop]: 27 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, 27 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 10:42:09,864 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:42:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-25 10:42:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-25 10:42:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:42:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-25 10:42:09,893 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2024-09-25 10:42:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:09,894 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-25 10:42:09,894 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:42:09,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-25 10:42:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 10:42:09,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:09,895 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:09,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 10:42:09,896 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:09,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1077379671, now seen corresponding path program 1 times [2024-09-25 10:42:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:09,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797920471] [2024-09-25 10:42:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981267981] [2024-09-25 10:42:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:09,941 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 10:42:09,943 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 10:42:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:10,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 10:42:10,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:10,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:42:10,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797920471] [2024-09-25 10:42:10,198 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981267981] [2024-09-25 10:42:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981267981] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:42:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:42:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-25 10:42:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456204424] [2024-09-25 10:42:10,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:42:10,200 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 10:42:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 10:42:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:42:10,201 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:42:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:10,321 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-09-25 10:42:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 10:42:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 10:42:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:10,323 INFO L225 Difference]: With dead ends: 39 [2024-09-25 10:42:10,323 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 10:42:10,323 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-25 10:42:10,324 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:10,325 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 80 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 10:42:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 10:42:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 10:42:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:42:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-25 10:42:10,339 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2024-09-25 10:42:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:10,340 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-25 10:42:10,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:42:10,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:10,341 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-25 10:42:10,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 10:42:10,342 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:10,343 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:10,355 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 10:42:10,543 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 10:42:10,544 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:10,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1997288540, now seen corresponding path program 1 times [2024-09-25 10:42:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:10,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714931728] [2024-09-25 10:42:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726239730] [2024-09-25 10:42:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:10,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:10,606 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 10:42:10,609 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 10:42:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:10,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 10:42:10,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:11,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:42:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714931728] [2024-09-25 10:42:13,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726239730] [2024-09-25 10:42:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726239730] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:42:13,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:42:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2024-09-25 10:42:13,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250583708] [2024-09-25 10:42:13,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:42:13,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 10:42:13,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:13,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 10:42:13,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-09-25 10:42:13,825 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 10:42:16,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 10:42:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:16,901 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-25 10:42:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 10:42:16,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-09-25 10:42:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:16,905 INFO L225 Difference]: With dead ends: 47 [2024-09-25 10:42:16,906 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 10:42:16,908 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-09-25 10:42:16,910 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:16,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 123 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-09-25 10:42:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 10:42:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-09-25 10:42:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 10:42:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-09-25 10:42:16,935 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 25 [2024-09-25 10:42:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:16,936 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-09-25 10:42:16,937 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-25 10:42:16,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-09-25 10:42:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 10:42:16,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:16,940 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:16,957 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 10:42:17,140 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 10:42:17,141 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:17,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -522671394, now seen corresponding path program 1 times [2024-09-25 10:42:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:17,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773960677] [2024-09-25 10:42:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416315929] [2024-09-25 10:42:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:17,185 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 10:42:17,187 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 10:42:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:17,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 10:42:17,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:17,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:42:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:42:18,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773960677] [2024-09-25 10:42:18,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:18,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416315929] [2024-09-25 10:42:18,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416315929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:42:18,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:42:18,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2024-09-25 10:42:18,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620051239] [2024-09-25 10:42:18,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:42:18,049 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 10:42:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 10:42:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-09-25 10:42:18,050 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 17 states have internal predecessors, (27), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 10:42:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:18,499 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-09-25 10:42:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 10:42:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 17 states have internal predecessors, (27), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2024-09-25 10:42:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:18,502 INFO L225 Difference]: With dead ends: 74 [2024-09-25 10:42:18,504 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 10:42:18,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:42:18,505 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:18,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 117 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 10:42:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 10:42:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-09-25 10:42:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:42:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2024-09-25 10:42:18,534 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 25 [2024-09-25 10:42:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:18,535 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2024-09-25 10:42:18,535 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.35) internal successors, (27), 17 states have internal predecessors, (27), 5 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 10:42:18,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2024-09-25 10:42:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 10:42:18,536 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:18,536 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:18,552 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 10:42:18,737 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 10:42:18,737 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:18,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1076616969, now seen corresponding path program 1 times [2024-09-25 10:42:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253001531] [2024-09-25 10:42:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:18,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143690084] [2024-09-25 10:42:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:18,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:18,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:18,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:42:18,764 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 10:42:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:18,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 10:42:18,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 10:42:18,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:42:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 10:42:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253001531] [2024-09-25 10:42:18,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:18,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143690084] [2024-09-25 10:42:18,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143690084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:42:18,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:42:18,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2024-09-25 10:42:18,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086927219] [2024-09-25 10:42:18,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:42:18,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 10:42:18,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 10:42:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-09-25 10:42:18,969 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-25 10:42:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:19,042 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-09-25 10:42:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 10:42:19,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2024-09-25 10:42:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:19,043 INFO L225 Difference]: With dead ends: 73 [2024-09-25 10:42:19,044 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 10:42:19,044 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-25 10:42:19,045 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:19,045 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:42:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 10:42:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-25 10:42:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-25 10:42:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2024-09-25 10:42:19,073 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 31 [2024-09-25 10:42:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:19,074 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2024-09-25 10:42:19,074 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-25 10:42:19,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2024-09-25 10:42:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 10:42:19,075 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:19,075 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:19,093 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 10:42:19,276 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:19,276 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:19,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:19,277 INFO L85 PathProgramCache]: Analyzing trace with hash 652238206, now seen corresponding path program 1 times [2024-09-25 10:42:19,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:19,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771710129] [2024-09-25 10:42:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:19,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:19,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784209602] [2024-09-25 10:42:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:19,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:19,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:19,350 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:42:19,351 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 10:42:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:42:19,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 10:42:19,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-09-25 10:42:20,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:42:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 10:42:21,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771710129] [2024-09-25 10:42:21,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784209602] [2024-09-25 10:42:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784209602] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:42:21,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:42:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-09-25 10:42:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028066311] [2024-09-25 10:42:21,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:42:21,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 10:42:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 10:42:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-25 10:42:21,166 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 10:42:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:23,222 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-25 10:42:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 10:42:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2024-09-25 10:42:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:23,226 INFO L225 Difference]: With dead ends: 85 [2024-09-25 10:42:23,226 INFO L226 Difference]: Without dead ends: 47 [2024-09-25 10:42:23,227 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:42:23,227 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:23,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 156 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 10:42:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-25 10:42:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-25 10:42:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-25 10:42:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2024-09-25 10:42:23,242 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 43 [2024-09-25 10:42:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:23,243 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2024-09-25 10:42:23,243 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 10:42:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2024-09-25 10:42:23,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-25 10:42:23,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:23,244 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:23,261 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 10:42:23,448 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-25 10:42:23,449 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:23,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1088875753, now seen corresponding path program 2 times [2024-09-25 10:42:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:23,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341217377] [2024-09-25 10:42:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:23,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:23,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396018372] [2024-09-25 10:42:23,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 10:42:23,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:23,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:23,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:42:23,523 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 10:42:23,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 10:42:23,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:42:23,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-25 10:42:23,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 10:42:25,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:42:26,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:42:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341217377] [2024-09-25 10:42:26,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:42:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396018372] [2024-09-25 10:42:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396018372] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:42:26,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:42:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-09-25 10:42:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075159137] [2024-09-25 10:42:26,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:42:26,988 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-25 10:42:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:42:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-25 10:42:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-09-25 10:42:26,989 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 10:42:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:42:27,464 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-25 10:42:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 10:42:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 52 [2024-09-25 10:42:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:42:27,465 INFO L225 Difference]: With dead ends: 61 [2024-09-25 10:42:27,465 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 10:42:27,466 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2024-09-25 10:42:27,466 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:42:27,467 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 221 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:42:27,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 10:42:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2024-09-25 10:42:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-25 10:42:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-09-25 10:42:27,486 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2024-09-25 10:42:27,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:42:27,487 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-09-25 10:42:27,487 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 17 states have internal predecessors, (32), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 10:42:27,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-09-25 10:42:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 10:42:27,491 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:42:27,491 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:42:27,507 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 10:42:27,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:27,692 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:42:27,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:42:27,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1411161186, now seen corresponding path program 3 times [2024-09-25 10:42:27,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:42:27,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758058491] [2024-09-25 10:42:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:42:27,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:42:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:42:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074931741] [2024-09-25 10:42:27,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 10:42:27,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:42:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:42:27,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:42:27,736 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 10:42:27,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 10:42:27,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:42:27,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-25 10:42:27,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:42:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 10:42:30,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:43:01,445 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 262 DAG size of output: 260 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-25 10:43:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 64 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 10:43:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:43:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758058491] [2024-09-25 10:43:12,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:43:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074931741] [2024-09-25 10:43:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074931741] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 10:43:12,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 10:43:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 33 [2024-09-25 10:43:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964856559] [2024-09-25 10:43:12,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 10:43:12,658 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-25 10:43:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:43:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-25 10:43:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 10:43:12,659 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-09-25 10:44:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:44:20,621 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2024-09-25 10:44:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-25 10:44:20,621 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) Word has length 61 [2024-09-25 10:44:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:44:20,622 INFO L225 Difference]: With dead ends: 97 [2024-09-25 10:44:20,623 INFO L226 Difference]: Without dead ends: 95 [2024-09-25 10:44:20,623 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 82.2s TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 10:44:20,624 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 74 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:44:20,624 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 340 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-09-25 10:44:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-25 10:44:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-09-25 10:44:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 72 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-25 10:44:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-25 10:44:20,666 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 61 [2024-09-25 10:44:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:44:20,667 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-25 10:44:20,667 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 29 states have internal predecessors, (62), 13 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2024-09-25 10:44:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:44:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-25 10:44:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-25 10:44:20,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:44:20,669 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:44:20,678 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 10:44:20,870 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:44:20,870 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:44:20,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:44:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash 955247465, now seen corresponding path program 4 times [2024-09-25 10:44:20,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:44:20,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711523448] [2024-09-25 10:44:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:44:20,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:44:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:44:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454994447] [2024-09-25 10:44:20,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 10:44:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:44:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:44:20,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:44:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 10:44:21,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 10:44:21,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:44:21,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-25 10:44:21,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:44:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 56 proven. 355 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-25 10:44:22,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 10:44:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:44:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711523448] [2024-09-25 10:44:23,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:44:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454994447] [2024-09-25 10:44:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454994447] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 10:44:23,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 10:44:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2024-09-25 10:44:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477247633] [2024-09-25 10:44:23,586 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 10:44:23,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 10:44:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 10:44:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 10:44:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1456, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 10:44:23,588 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 33 states have internal predecessors, (64), 14 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-25 10:44:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:44:24,468 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2024-09-25 10:44:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-25 10:44:24,468 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 33 states have internal predecessors, (64), 14 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) Word has length 124 [2024-09-25 10:44:24,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:44:24,469 INFO L225 Difference]: With dead ends: 109 [2024-09-25 10:44:24,469 INFO L226 Difference]: Without dead ends: 107 [2024-09-25 10:44:24,470 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 10:44:24,471 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 10:44:24,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 689 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 10:44:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-25 10:44:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2024-09-25 10:44:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 79 states have internal predecessors, (79), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-25 10:44:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2024-09-25 10:44:24,523 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 124 [2024-09-25 10:44:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:44:24,524 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2024-09-25 10:44:24,524 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 33 states have internal predecessors, (64), 14 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2024-09-25 10:44:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:44:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2024-09-25 10:44:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-25 10:44:24,526 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:44:24,526 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:44:24,542 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 10:44:24,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:44:24,730 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:44:24,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:44:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1070642462, now seen corresponding path program 5 times [2024-09-25 10:44:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 10:44:24,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852501491] [2024-09-25 10:44:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:44:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 10:44:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 10:44:24,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828548222] [2024-09-25 10:44:24,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 10:44:24,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 10:44:24,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:44:24,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 10:44:24,849 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 10:44:24,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-09-25 10:44:24,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 10:44:24,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-09-25 10:44:24,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:45:59,912 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 101 [2024-09-25 10:45:59,912 WARN L249 Executor]: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-09-25 10:45:59,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 10:45:59,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852501491] [2024-09-25 10:45:59,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 10:45:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828548222] [2024-09-25 10:45:59,914 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-09-25 10:45:59,932 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-25 10:46:00,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-25 10:46:00,115 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:327) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-09-25 10:46:00,121 INFO L158 Benchmark]: Toolchain (without parser) took 231373.97ms. Allocated memory was 62.9MB in the beginning and 209.7MB in the end (delta: 146.8MB). Free memory was 30.5MB in the beginning and 149.7MB in the end (delta: -119.2MB). Peak memory consumption was 121.4MB. Max. memory is 16.1GB. [2024-09-25 10:46:00,121 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 46.1MB. Free memory was 24.5MB in the beginning and 24.4MB in the end (delta: 60.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:46:00,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.37ms. Allocated memory is still 62.9MB. Free memory was 30.3MB in the beginning and 37.2MB in the end (delta: -6.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-09-25 10:46:00,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.21ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 36.0MB in the end (delta: 944.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 10:46:00,121 INFO L158 Benchmark]: Boogie Preprocessor took 47.33ms. Allocated memory is still 62.9MB. Free memory was 36.0MB in the beginning and 34.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 10:46:00,122 INFO L158 Benchmark]: RCFGBuilder took 368.71ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.3MB in the beginning and 58.8MB in the end (delta: -24.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 10:46:00,122 INFO L158 Benchmark]: TraceAbstraction took 230637.42ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 58.0MB in the beginning and 149.7MB in the end (delta: -91.6MB). Peak memory consumption was 127.8MB. Max. memory is 16.1GB. [2024-09-25 10:46:00,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 46.1MB. Free memory was 24.5MB in the beginning and 24.4MB in the end (delta: 60.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.37ms. Allocated memory is still 62.9MB. Free memory was 30.3MB in the beginning and 37.2MB in the end (delta: -6.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.21ms. Allocated memory is still 62.9MB. Free memory was 36.9MB in the beginning and 36.0MB in the end (delta: 944.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.33ms. Allocated memory is still 62.9MB. Free memory was 36.0MB in the beginning and 34.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.71ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 34.3MB in the beginning and 58.8MB in the end (delta: -24.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 230637.42ms. Allocated memory was 81.8MB in the beginning and 209.7MB in the end (delta: 127.9MB). Free memory was 58.0MB in the beginning and 149.7MB in the end (delta: -91.6MB). Peak memory consumption was 127.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/prodbin-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.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 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 --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 10:46:01,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 10:46:02,025 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-25 10:46:02,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 10:46:02,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 10:46:02,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 10:46:02,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 10:46:02,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 10:46:02,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 10:46:02,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 10:46:02,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 10:46:02,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 10:46:02,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 10:46:02,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 10:46:02,075 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 10:46:02,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 10:46:02,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 10:46:02,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 10:46:02,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 10:46:02,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 10:46:02,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 10:46:02,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 10:46:02,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 10:46:02,081 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-25 10:46:02,081 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-25 10:46:02,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 10:46:02,082 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-25 10:46:02,082 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 10:46:02,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 10:46:02,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 10:46:02,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 10:46:02,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 10:46:02,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 10:46:02,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 10:46:02,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:46:02,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 10:46:02,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 10:46:02,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 10:46:02,086 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-25 10:46:02,086 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-25 10:46:02,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 10:46:02,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 10:46:02,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 10:46:02,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 10:46:02,087 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-25 10:46:02,088 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 -> 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 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 10:46:02,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 10:46:02,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 10:46:02,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 10:46:02,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 10:46:02,425 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 10:46:02,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/prodbin-ll.c [2024-09-25 10:46:03,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 10:46:04,121 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 10:46:04,122 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/prodbin-ll.c [2024-09-25 10:46:04,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/606bf72c8/6271b6e8769f4e98b1feb7e1e1651039/FLAGfb913052e [2024-09-25 10:46:04,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/606bf72c8/6271b6e8769f4e98b1feb7e1e1651039 [2024-09-25 10:46:04,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 10:46:04,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 10:46:04,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 10:46:04,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 10:46:04,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 10:46:04,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a29b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04, skipping insertion in model container [2024-09-25 10:46:04,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 10:46:04,303 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/prodbin-ll.c[537,550] [2024-09-25 10:46:04,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:46:04,332 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 10:46:04,343 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/prodbin-ll.c[537,550] [2024-09-25 10:46:04,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 10:46:04,374 INFO L204 MainTranslator]: Completed translation [2024-09-25 10:46:04,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04 WrapperNode [2024-09-25 10:46:04,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 10:46:04,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 10:46:04,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 10:46:04,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 10:46:04,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,396 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 10:46:04,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 10:46:04,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 10:46:04,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 10:46:04,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 10:46:04,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,409 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,422 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 10:46:04,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,431 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 10:46:04,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 10:46:04,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 10:46:04,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 10:46:04,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (1/1) ... [2024-09-25 10:46:04,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 10:46:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 10:46:04,465 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 10:46:04,467 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 10:46:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 10:46:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-25 10:46:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 10:46:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 10:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 10:46:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 10:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 10:46:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 10:46:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 10:46:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 10:46:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 10:46:04,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 10:46:04,598 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 10:46:04,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 10:46:04,742 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 10:46:04,742 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 10:46:04,775 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 10:46:04,776 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 10:46:04,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:46:04 BoogieIcfgContainer [2024-09-25 10:46:04,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 10:46:04,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 10:46:04,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 10:46:04,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 10:46:04,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:46:04" (1/3) ... [2024-09-25 10:46:04,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee73251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:46:04, skipping insertion in model container [2024-09-25 10:46:04,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:46:04" (2/3) ... [2024-09-25 10:46:04,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee73251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:46:04, skipping insertion in model container [2024-09-25 10:46:04,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:46:04" (3/3) ... [2024-09-25 10:46:04,785 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll.c [2024-09-25 10:46:04,803 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 10:46:04,803 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 10:46:04,863 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 10:46:04,870 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;@29716e0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 10:46:04,870 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 10:46:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-25 10:46:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 10:46:04,881 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:46:04,881 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:46:04,882 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:46:04,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:46:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1759225501, now seen corresponding path program 1 times [2024-09-25 10:46:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 10:46:04,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29522997] [2024-09-25 10:46:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:46:04,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-25 10:46:04,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 10:46:04,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-25 10:46:04,904 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-09-25 10:46:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:46:04,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-25 10:46:04,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:46:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:46:05,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:46:05,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 10:46:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29522997] [2024-09-25 10:46:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29522997] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:46:05,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:46:05,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 10:46:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636413263] [2024-09-25 10:46:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:46:05,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 10:46:05,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 10:46:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 10:46:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 10:46:05,047 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:46:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:46:05,080 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-09-25 10:46:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 10:46:05,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 10:46:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:46:05,087 INFO L225 Difference]: With dead ends: 46 [2024-09-25 10:46:05,088 INFO L226 Difference]: Without dead ends: 23 [2024-09-25 10:46:05,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 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 10:46:05,093 INFO L434 NwaCegarLoop]: 27 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, 27 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 10:46:05,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 10:46:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-25 10:46:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-25 10:46:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-25 10:46:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-25 10:46:05,123 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 16 [2024-09-25 10:46:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:46:05,124 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-25 10:46:05,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:46:05,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:46:05,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-25 10:46:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 10:46:05,127 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:46:05,128 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:46:05,132 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-09-25 10:46:05,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-25 10:46:05,332 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:46:05,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:46:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1077379671, now seen corresponding path program 1 times [2024-09-25 10:46:05,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 10:46:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996274690] [2024-09-25 10:46:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:46:05,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-25 10:46:05,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 10:46:05,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-25 10:46:05,339 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-09-25 10:46:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 10:46:05,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-25 10:46:05,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 10:46:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 10:46:05,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 10:46:05,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 10:46:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996274690] [2024-09-25 10:46:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996274690] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 10:46:05,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 10:46:05,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-25 10:46:05,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197238472] [2024-09-25 10:46:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 10:46:05,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 10:46:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 10:46:05,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 10:46:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-25 10:46:05,905 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:46:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 10:46:06,330 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-09-25 10:46:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 10:46:06,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-25 10:46:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 10:46:06,334 INFO L225 Difference]: With dead ends: 39 [2024-09-25 10:46:06,334 INFO L226 Difference]: Without dead ends: 32 [2024-09-25 10:46:06,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-09-25 10:46:06,335 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 10:46:06,336 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 80 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 10:46:06,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-25 10:46:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-25 10:46:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 10:46:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-09-25 10:46:06,350 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2024-09-25 10:46:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 10:46:06,350 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-09-25 10:46:06,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 10:46:06,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:46:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-09-25 10:46:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 10:46:06,352 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 10:46:06,352 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 10:46:06,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-09-25 10:46:06,553 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-25 10:46:06,554 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 10:46:06,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 10:46:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1997288540, now seen corresponding path program 1 times [2024-09-25 10:46:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 10:46:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418033466] [2024-09-25 10:46:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 10:46:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-09-25 10:46:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 10:46:06,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-09-25 10:46:06,558 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process