./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.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 c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:00:06,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:00:07,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:00:07,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:00:07,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:00:07,059 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:00:07,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:00:07,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:00:07,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:00:07,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:00:07,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:00:07,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:00:07,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:00:07,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:00:07,067 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:00:07,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:00:07,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:00:07,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:00:07,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:00:07,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:00:07,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:00:07,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:00:07,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:00:07,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:00:07,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:00:07,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:00:07,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:00:07,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:00:07,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:00:07,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:00:07,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:00:07,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:00:07,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:00:07,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:00:07,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:00:07,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:00:07,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:00:07,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:00:07,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:00:07,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:00:07,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:00:07,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:00:07,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:00:07,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:00:07,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:00:07,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:00:07,462 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:00:07,463 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:00:07,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-25 00:00:08,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:00:09,190 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:00:09,191 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-25 00:00:09,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d569b7d03/86b1bfda950e4c56b02fa07a480eef2d/FLAGdf073df51 [2024-09-25 00:00:09,216 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d569b7d03/86b1bfda950e4c56b02fa07a480eef2d [2024-09-25 00:00:09,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:00:09,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:00:09,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:00:09,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:00:09,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:00:09,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4403341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09, skipping insertion in model container [2024-09-25 00:00:09,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:00:09,412 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-25 00:00:09,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:00:09,441 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:00:09,453 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-25 00:00:09,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:00:09,483 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:00:09,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09 WrapperNode [2024-09-25 00:00:09,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:00:09,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:00:09,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:00:09,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:00:09,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,512 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:00:09,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:00:09,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:00:09,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:00:09,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:00:09,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,552 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 00:00:09,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:00:09,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:00:09,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:00:09,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:00:09,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (1/1) ... [2024-09-25 00:00:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:00:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:09,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 00:00:09,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 00:00:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:00:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 00:00:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 00:00:09,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:00:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:00:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:00:09,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:00:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:00:09,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:00:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:00:09,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:00:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:00:09,757 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:00:09,760 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:00:09,921 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:00:09,925 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:00:09,980 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:00:09,980 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:00:09,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:00:09 BoogieIcfgContainer [2024-09-25 00:00:09,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:00:09,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:00:09,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:00:09,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:00:09,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:00:09" (1/3) ... [2024-09-25 00:00:09,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0523e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:00:09, skipping insertion in model container [2024-09-25 00:00:09,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:00:09" (2/3) ... [2024-09-25 00:00:09,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0523e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:00:09, skipping insertion in model container [2024-09-25 00:00:09,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:00:09" (3/3) ... [2024-09-25 00:00:09,997 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound50.c [2024-09-25 00:00:10,018 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:00:10,019 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:00:10,111 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:00:10,124 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;@5d0f1808, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:00:10,124 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:00:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 00:00:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 00:00:10,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:10,145 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:10,146 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:10,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1841004279, now seen corresponding path program 1 times [2024-09-25 00:00:10,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:10,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815530944] [2024-09-25 00:00:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,393 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 00:00:10,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815530944] [2024-09-25 00:00:10,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815530944] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:00:10,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:00:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-25 00:00:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540981622] [2024-09-25 00:00:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:10,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-25 00:00:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:10,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-25 00:00:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-25 00:00:10,461 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 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 00:00:10,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:10,560 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-09-25 00:00:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-25 00:00:10,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 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 00:00:10,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:10,570 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:00:10,570 INFO L226 Difference]: Without dead ends: 25 [2024-09-25 00:00:10,573 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-25 00:00:10,579 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:10,581 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-25 00:00:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-25 00:00:10,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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 00:00:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-25 00:00:10,621 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-09-25 00:00:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:10,622 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-25 00:00:10,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 3 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 00:00:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-25 00:00:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:00:10,624 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:10,624 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:10,624 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:00:10,625 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:10,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash 233646544, now seen corresponding path program 1 times [2024-09-25 00:00:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414506200] [2024-09-25 00:00:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:10,832 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 00:00:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414506200] [2024-09-25 00:00:10,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414506200] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:00:10,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:00:10,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:00:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070858835] [2024-09-25 00:00:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:10,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:00:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:00:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:00:10,842 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:00:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:10,954 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-09-25 00:00:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:00:10,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-25 00:00:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:10,956 INFO L225 Difference]: With dead ends: 33 [2024-09-25 00:00:10,957 INFO L226 Difference]: Without dead ends: 26 [2024-09-25 00:00:10,958 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:00:10,960 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:10,960 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-25 00:00:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-25 00:00:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 00:00:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-25 00:00:10,977 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2024-09-25 00:00:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:10,978 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-25 00:00:10,978 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:00:10,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-25 00:00:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:00:10,979 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:10,979 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:10,980 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 00:00:10,980 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:10,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 235434004, now seen corresponding path program 1 times [2024-09-25 00:00:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:10,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642267669] [2024-09-25 00:00:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485667250] [2024-09-25 00:00:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:11,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:11,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:11,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:00:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:11,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:00:11,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:11,267 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 00:00:11,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:00:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642267669] [2024-09-25 00:00:11,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485667250] [2024-09-25 00:00:11,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485667250] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:00:11,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:00:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-09-25 00:00:11,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690579803] [2024-09-25 00:00:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:00:11,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 00:00:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 00:00:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:00:11,275 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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 00:00:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:11,399 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-09-25 00:00:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:00:11,400 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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 17 [2024-09-25 00:00:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:11,402 INFO L225 Difference]: With dead ends: 41 [2024-09-25 00:00:11,402 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 00:00:11,403 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 00:00:11,404 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:11,404 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:11,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 00:00:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-25 00:00:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 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 00:00:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-25 00:00:11,420 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2024-09-25 00:00:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:11,420 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-25 00:00:11,421 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 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 00:00:11,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-25 00:00:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:00:11,423 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:11,423 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:11,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:00:11,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:11,628 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:11,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1090652054, now seen corresponding path program 1 times [2024-09-25 00:00:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930587037] [2024-09-25 00:00:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:11,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:11,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:11,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-25 00:00:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:11,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930587037] [2024-09-25 00:00:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930587037] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241416850] [2024-09-25 00:00:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:11,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:11,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:11,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:11,959 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:00:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:12,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 00:00:12,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:12,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241416850] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:12,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:00:12,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-09-25 00:00:12,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069096923] [2024-09-25 00:00:12,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:12,193 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 00:00:12,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 00:00:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:00:12,198 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 00:00:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:12,412 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-09-25 00:00:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:00:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 27 [2024-09-25 00:00:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:12,415 INFO L225 Difference]: With dead ends: 69 [2024-09-25 00:00:12,415 INFO L226 Difference]: Without dead ends: 62 [2024-09-25 00:00:12,416 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-25 00:00:12,419 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 56 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:12,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 81 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-25 00:00:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-09-25 00:00:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 44 states have internal predecessors, (52), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:00:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-09-25 00:00:12,439 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 27 [2024-09-25 00:00:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:12,439 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-09-25 00:00:12,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 7 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 00:00:12,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-09-25 00:00:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:00:12,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:12,441 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:12,463 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 00:00:12,641 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:12,642 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:12,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1088864594, now seen corresponding path program 1 times [2024-09-25 00:00:12,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:12,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402344087] [2024-09-25 00:00:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:12,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253696261] [2024-09-25 00:00:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:12,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:12,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:00:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:12,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-25 00:00:12,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:13,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402344087] [2024-09-25 00:00:16,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253696261] [2024-09-25 00:00:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253696261] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:16,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2024-09-25 00:00:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585761560] [2024-09-25 00:00:16,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:16,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:00:16,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:16,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:00:16,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-09-25 00:00:16,782 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 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 00:00:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:17,164 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2024-09-25 00:00:17,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:00:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 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 27 [2024-09-25 00:00:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:17,171 INFO L225 Difference]: With dead ends: 91 [2024-09-25 00:00:17,171 INFO L226 Difference]: Without dead ends: 89 [2024-09-25 00:00:17,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-09-25 00:00:17,173 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:17,174 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 173 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:00:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-25 00:00:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-09-25 00:00:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.21875) internal successors, (78), 69 states have internal predecessors, (78), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:00:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2024-09-25 00:00:17,210 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 27 [2024-09-25 00:00:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:17,211 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2024-09-25 00:00:17,212 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 4 states have call successors, (7), 3 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 00:00:17,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2024-09-25 00:00:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:00:17,213 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:17,214 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:17,234 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:00:17,417 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:17,418 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:17,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1898211220, now seen corresponding path program 1 times [2024-09-25 00:00:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864278528] [2024-09-25 00:00:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009403494] [2024-09-25 00:00:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:17,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:17,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:17,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:00:17,462 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:00:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:17,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:00:17,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:17,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864278528] [2024-09-25 00:00:18,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009403494] [2024-09-25 00:00:18,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009403494] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:18,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-25 00:00:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116768354] [2024-09-25 00:00:18,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:18,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-25 00:00:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-25 00:00:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-09-25 00:00:18,230 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 00:00:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:18,627 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2024-09-25 00:00:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:00:18,628 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2024-09-25 00:00:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:18,630 INFO L225 Difference]: With dead ends: 138 [2024-09-25 00:00:18,630 INFO L226 Difference]: Without dead ends: 127 [2024-09-25 00:00:18,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:00:18,632 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:18,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 173 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:00:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-25 00:00:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2024-09-25 00:00:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:00:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-09-25 00:00:18,670 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 27 [2024-09-25 00:00:18,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:18,670 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-09-25 00:00:18,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-25 00:00:18,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-09-25 00:00:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-25 00:00:18,672 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:18,672 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:18,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:00:18,878 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:18,879 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:18,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2085342267, now seen corresponding path program 1 times [2024-09-25 00:00:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106055205] [2024-09-25 00:00:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:18,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341340821] [2024-09-25 00:00:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:18,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:18,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:18,915 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 00:00:18,917 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 00:00:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:18,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:00:18,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:00:19,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-25 00:00:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106055205] [2024-09-25 00:00:19,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341340821] [2024-09-25 00:00:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341340821] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:19,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-25 00:00:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478692168] [2024-09-25 00:00:19,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:19,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 00:00:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 00:00:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:00:19,143 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-25 00:00:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:19,268 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2024-09-25 00:00:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:00:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2024-09-25 00:00:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:19,271 INFO L225 Difference]: With dead ends: 99 [2024-09-25 00:00:19,272 INFO L226 Difference]: Without dead ends: 89 [2024-09-25 00:00:19,273 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:00:19,273 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:19,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-25 00:00:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-09-25 00:00:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 68 states have internal predecessors, (75), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-25 00:00:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-09-25 00:00:19,308 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 33 [2024-09-25 00:00:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:19,309 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-09-25 00:00:19,310 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2024-09-25 00:00:19,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-09-25 00:00:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-25 00:00:19,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:19,312 INFO L216 NwaCegarLoop]: trace histogram [4, 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 00:00:19,332 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 00:00:19,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-25 00:00:19,517 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:19,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash -134747104, now seen corresponding path program 1 times [2024-09-25 00:00:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482612709] [2024-09-25 00:00:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:19,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697857906] [2024-09-25 00:00:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:19,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:19,555 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 00:00:19,557 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 00:00:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:19,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-25 00:00:19,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:00:20,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-25 00:00:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482612709] [2024-09-25 00:00:21,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697857906] [2024-09-25 00:00:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697857906] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:21,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:21,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 23 [2024-09-25 00:00:21,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088806152] [2024-09-25 00:00:21,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:21,633 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-25 00:00:21,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-25 00:00:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-09-25 00:00:21,635 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-25 00:00:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:23,881 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2024-09-25 00:00:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:00:23,882 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2024-09-25 00:00:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:23,884 INFO L225 Difference]: With dead ends: 141 [2024-09-25 00:00:23,884 INFO L226 Difference]: Without dead ends: 139 [2024-09-25 00:00:23,885 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:00:23,885 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:23,886 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 337 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2024-09-25 00:00:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-25 00:00:23,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-25 00:00:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 110 states have internal predecessors, (121), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-25 00:00:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2024-09-25 00:00:23,936 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 47 [2024-09-25 00:00:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:23,936 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2024-09-25 00:00:23,936 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-25 00:00:23,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2024-09-25 00:00:23,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-25 00:00:23,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:23,940 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:23,957 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 00:00:24,140 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:24,141 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:24,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2108223176, now seen corresponding path program 2 times [2024-09-25 00:00:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303798233] [2024-09-25 00:00:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:00:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:00:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-25 00:00:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-25 00:00:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-25 00:00:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-25 00:00:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:00:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 00:00:24,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303798233] [2024-09-25 00:00:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303798233] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:00:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602914743] [2024-09-25 00:00:24,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:00:24,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:24,422 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 00:00:24,424 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 00:00:24,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:00:24,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:00:24,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-25 00:00:24,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:00:24,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-25 00:00:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602914743] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:24,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:00:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2024-09-25 00:00:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867968310] [2024-09-25 00:00:24,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:24,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-25 00:00:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-25 00:00:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-09-25 00:00:24,724 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:00:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:00:25,113 INFO L93 Difference]: Finished difference Result 315 states and 366 transitions. [2024-09-25 00:00:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-25 00:00:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) Word has length 57 [2024-09-25 00:00:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:00:25,116 INFO L225 Difference]: With dead ends: 315 [2024-09-25 00:00:25,116 INFO L226 Difference]: Without dead ends: 308 [2024-09-25 00:00:25,117 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=861, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:00:25,119 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 114 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:00:25,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 102 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:00:25,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-09-25 00:00:25,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2024-09-25 00:00:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 244 states have internal predecessors, (264), 36 states have call successors, (36), 29 states have call predecessors, (36), 28 states have return successors, (34), 24 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-25 00:00:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 334 transitions. [2024-09-25 00:00:25,206 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 334 transitions. Word has length 57 [2024-09-25 00:00:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:00:25,206 INFO L474 AbstractCegarLoop]: Abstraction has 298 states and 334 transitions. [2024-09-25 00:00:25,206 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 13 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (18), 11 states have call predecessors, (18), 12 states have call successors, (18) [2024-09-25 00:00:25,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 334 transitions. [2024-09-25 00:00:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-25 00:00:25,210 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:00:25,210 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:00:25,228 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 00:00:25,411 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:25,411 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:00:25,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:00:25,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1644319050, now seen corresponding path program 2 times [2024-09-25 00:00:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:00:25,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404084085] [2024-09-25 00:00:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:00:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:00:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:00:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169980030] [2024-09-25 00:00:25,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:00:25,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:00:25,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:00:25,441 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 00:00:25,445 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 00:00:25,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:00:25,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:00:25,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-25 00:00:25,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:00:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 00:00:28,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:00:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-25 00:00:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:00:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404084085] [2024-09-25 00:00:46,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:00:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169980030] [2024-09-25 00:00:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169980030] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:00:46,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:00:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 27 [2024-09-25 00:00:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090077591] [2024-09-25 00:00:46,551 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:00:46,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-25 00:00:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:00:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-25 00:00:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-09-25 00:00:46,552 INFO L87 Difference]: Start difference. First operand 298 states and 334 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-25 00:00:53,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-25 00:01:06,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-25 00:01:11,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-25 00:01:15,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-25 00:01:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:01:19,652 INFO L93 Difference]: Finished difference Result 424 states and 487 transitions. [2024-09-25 00:01:19,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-25 00:01:19,652 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 57 [2024-09-25 00:01:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:01:19,655 INFO L225 Difference]: With dead ends: 424 [2024-09-25 00:01:19,656 INFO L226 Difference]: Without dead ends: 422 [2024-09-25 00:01:19,656 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=288, Invalid=1044, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 00:01:19,657 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:01:19,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 323 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 450 Invalid, 2 Unknown, 0 Unchecked, 17.5s Time] [2024-09-25 00:01:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-09-25 00:01:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 419. [2024-09-25 00:01:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 332 states have (on average 1.1355421686746987) internal successors, (377), 343 states have internal predecessors, (377), 51 states have call successors, (51), 36 states have call predecessors, (51), 35 states have return successors, (49), 39 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-25 00:01:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2024-09-25 00:01:19,777 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 57 [2024-09-25 00:01:19,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:01:19,777 INFO L474 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2024-09-25 00:01:19,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 25 states have internal predecessors, (62), 9 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-09-25 00:01:19,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:01:19,778 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2024-09-25 00:01:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-25 00:01:19,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:01:19,780 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:01:19,795 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 00:01:19,984 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:01:19,985 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:01:19,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:01:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1819634904, now seen corresponding path program 3 times [2024-09-25 00:01:19,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:01:19,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299031533] [2024-09-25 00:01:19,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:01:19,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:01:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:01:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029097264] [2024-09-25 00:01:20,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:01:20,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:01:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:01:20,047 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 00:01:20,051 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 00:01:20,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-25 00:01:20,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:01:20,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-25 00:01:20,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:01:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 121 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-25 00:01:28,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:01:37,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:01:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299031533] [2024-09-25 00:01:37,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:01:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029097264] [2024-09-25 00:01:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029097264] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:01:37,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:01:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-09-25 00:01:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735875260] [2024-09-25 00:01:37,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-09-25 00:01:37,955 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:01:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:01:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:01:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-09-25 00:01:37,957 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:01:42,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-09-25 00:01:45,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:01:45,505 INFO L93 Difference]: Finished difference Result 655 states and 753 transitions. [2024-09-25 00:01:45,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 00:01:45,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 77 [2024-09-25 00:01:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:01:45,512 INFO L225 Difference]: With dead ends: 655 [2024-09-25 00:01:45,512 INFO L226 Difference]: Without dead ends: 653 [2024-09-25 00:01:45,513 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2024-09-25 00:01:45,514 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-09-25 00:01:45,514 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 261 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2024-09-25 00:01:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-09-25 00:01:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 209. [2024-09-25 00:01:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 165 states have internal predecessors, (186), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-25 00:01:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 230 transitions. [2024-09-25 00:01:45,669 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 230 transitions. Word has length 77 [2024-09-25 00:01:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:01:45,669 INFO L474 AbstractCegarLoop]: Abstraction has 209 states and 230 transitions. [2024-09-25 00:01:45,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-25 00:01:45,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:01:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 230 transitions. [2024-09-25 00:01:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-25 00:01:45,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:01:45,671 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:01:45,688 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:01:45,871 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-25 00:01:45,872 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:01:45,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:01:45,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1188109524, now seen corresponding path program 2 times [2024-09-25 00:01:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:01:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002247444] [2024-09-25 00:01:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:01:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:01:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-25 00:01:45,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597211187] [2024-09-25 00:01:45,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:01:45,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:01:45,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:01:45,928 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:01:45,939 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:01:46,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:01:46,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:01:46,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-25 00:01:46,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:24,161 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 00:02:24,162 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 00:02:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:02:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002247444] [2024-09-25 00:02:24,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-25 00:02:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597211187] [2024-09-25 00:02:24,163 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-09-25 00:02:24,177 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 00:02:24,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-25 00:02:24,364 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 00:02:24,370 INFO L158 Benchmark]: Toolchain (without parser) took 135149.74ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 143.3MB in the beginning and 100.6MB in the end (delta: 42.7MB). Peak memory consumption was 124.0MB. Max. memory is 16.1GB. [2024-09-25 00:02:24,370 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:02:24,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.06ms. Allocated memory is still 176.2MB. Free memory was 143.1MB in the beginning and 138.8MB in the end (delta: 4.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-25 00:02:24,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.89ms. Allocated memory is still 176.2MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:02:24,371 INFO L158 Benchmark]: Boogie Preprocessor took 59.11ms. Allocated memory is still 176.2MB. Free memory was 137.7MB in the beginning and 136.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:02:24,371 INFO L158 Benchmark]: RCFGBuilder took 407.30ms. Allocated memory is still 176.2MB. Free memory was 136.5MB in the beginning and 144.2MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:02:24,371 INFO L158 Benchmark]: TraceAbstraction took 134382.40ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 144.2MB in the beginning and 100.6MB in the end (delta: 43.6MB). Peak memory consumption was 126.3MB. Max. memory is 16.1GB. [2024-09-25 00:02:24,374 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 176.2MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.06ms. Allocated memory is still 176.2MB. Free memory was 143.1MB in the beginning and 138.8MB in the end (delta: 4.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.89ms. Allocated memory is still 176.2MB. Free memory was 138.8MB in the beginning and 137.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.11ms. Allocated memory is still 176.2MB. Free memory was 137.7MB in the beginning and 136.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 407.30ms. Allocated memory is still 176.2MB. Free memory was 136.5MB in the beginning and 144.2MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 134382.40ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 144.2MB in the beginning and 100.6MB in the end (delta: 43.6MB). Peak memory consumption was 126.3MB. 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-scaling/prodbin-ll_unwindbound50.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 c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-25 00:02:26,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:02:26,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-25 00:02:26,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:02:26,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:02:26,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:02:26,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:02:26,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:02:26,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:02:26,444 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:02:26,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:02:26,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:02:26,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:02:26,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:02:26,447 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:02:26,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:02:26,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:02:26,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:02:26,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:02:26,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:02:26,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:02:26,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:02:26,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:02:26,456 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-25 00:02:26,456 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-25 00:02:26,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:02:26,457 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-25 00:02:26,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:02:26,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:02:26,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:02:26,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:02:26,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:02:26,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:02:26,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:02:26,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:26,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:02:26,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:02:26,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:02:26,459 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-25 00:02:26,459 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-25 00:02:26,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:02:26,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:02:26,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:02:26,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:02:26,461 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-25 00:02:26,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c54d9189042c7bc9bae976b882c7c0538c4797366038f58e7e5d207abe4f931e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:02:26,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:02:26,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:02:26,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:02:26,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:02:26,794 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:02:26,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-25 00:02:28,401 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:02:28,598 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:02:28,599 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c [2024-09-25 00:02:28,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/561035a52/c5eac384a20f4fdf9afa2679f67d6d54/FLAG406fbd04c [2024-09-25 00:02:28,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/561035a52/c5eac384a20f4fdf9afa2679f67d6d54 [2024-09-25 00:02:28,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:02:28,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:02:28,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:28,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:02:28,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:02:28,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8427a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28, skipping insertion in model container [2024-09-25 00:02:28,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,659 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:02:28,843 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-25 00:02:28,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:28,884 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:02:28,895 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound50.c[1263,1276] [2024-09-25 00:02:28,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:02:28,922 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:02:28,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28 WrapperNode [2024-09-25 00:02:28,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:02:28,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:28,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:02:28,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:02:28,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,944 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:02:28,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:02:28,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:02:28,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:02:28,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:02:28,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,975 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 00:02:28,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,982 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:02:28,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:02:28,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:02:28,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:02:28,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (1/1) ... [2024-09-25 00:02:28,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:02:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:02:29,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 00:02:29,027 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 00:02:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:02:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-25 00:02:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-25 00:02:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-25 00:02:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:02:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:02:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:02:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:02:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:02:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:02:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-25 00:02:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-25 00:02:29,142 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:02:29,146 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:02:29,367 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-25 00:02:29,371 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:02:29,408 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:02:29,408 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-25 00:02:29,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:29 BoogieIcfgContainer [2024-09-25 00:02:29,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:02:29,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:02:29,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:02:29,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:02:29,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:02:28" (1/3) ... [2024-09-25 00:02:29,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86a3f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:29, skipping insertion in model container [2024-09-25 00:02:29,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:28" (2/3) ... [2024-09-25 00:02:29,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86a3f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:29, skipping insertion in model container [2024-09-25 00:02:29,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:29" (3/3) ... [2024-09-25 00:02:29,418 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound50.c [2024-09-25 00:02:29,434 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:02:29,434 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:02:29,493 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:02:29,499 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;@6bb1f991, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:02:29,499 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:02:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 00:02:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-25 00:02:29,510 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:29,511 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:29,511 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:29,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1841004279, now seen corresponding path program 1 times [2024-09-25 00:02:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634089562] [2024-09-25 00:02:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:29,530 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 00:02:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:29,534 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 00:02:29,535 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 00:02:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:29,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-25 00:02:29,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:29,657 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 00:02:29,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:29,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 00:02:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634089562] [2024-09-25 00:02:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634089562] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-25 00:02:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846380126] [2024-09-25 00:02:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:29,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-25 00:02:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 00:02:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-25 00:02:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-25 00:02:29,689 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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 00:02:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:29,723 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-09-25 00:02:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-25 00:02:29,726 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 00:02:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:29,733 INFO L225 Difference]: With dead ends: 48 [2024-09-25 00:02:29,733 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 00:02:29,736 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 00:02:29,741 INFO L434 NwaCegarLoop]: 29 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, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:29,742 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 00:02:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 00:02:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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 00:02:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-25 00:02:29,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-09-25 00:02:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:29,781 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-25 00:02:29,782 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 00:02:29,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:29,783 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-25 00:02:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:02:29,784 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:29,784 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:29,789 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 00:02:29,984 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 00:02:29,985 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:29,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 233646544, now seen corresponding path program 1 times [2024-09-25 00:02:29,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:29,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94765536] [2024-09-25 00:02:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:29,987 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 00:02:29,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:29,992 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 00:02:29,993 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 00:02:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:30,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-25 00:02:30,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:30,142 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 00:02:30,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:30,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 00:02:30,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94765536] [2024-09-25 00:02:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94765536] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-25 00:02:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317143689] [2024-09-25 00:02:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:30,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-25 00:02:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 00:02:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-25 00:02:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:02:30,151 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:02:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:30,183 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-09-25 00:02:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-25 00:02:30,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-25 00:02:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:30,185 INFO L225 Difference]: With dead ends: 33 [2024-09-25 00:02:30,186 INFO L226 Difference]: Without dead ends: 26 [2024-09-25 00:02:30,186 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-25 00:02:30,187 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:30,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:02:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-25 00:02:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-25 00:02:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 00:02:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-25 00:02:30,198 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2024-09-25 00:02:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:30,202 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-25 00:02:30,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-25 00:02:30,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-25 00:02:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-25 00:02:30,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:30,204 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:30,210 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 00:02:30,408 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 00:02:30,409 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:30,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 235434004, now seen corresponding path program 1 times [2024-09-25 00:02:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719640278] [2024-09-25 00:02:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:30,410 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 00:02:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:30,412 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 00:02:30,413 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 [2024-09-25 00:02:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:30,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:02:30,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:30,880 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 00:02:30,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:30,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 00:02:30,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719640278] [2024-09-25 00:02:30,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719640278] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:30,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:02:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402072015] [2024-09-25 00:02:30,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:30,886 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:02:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 00:02:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:02:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:02:30,887 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:02:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:31,211 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-09-25 00:02:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:02:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-09-25 00:02:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:31,212 INFO L225 Difference]: With dead ends: 36 [2024-09-25 00:02:31,212 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 00:02:31,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:02:31,214 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:31,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:02:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 00:02:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-09-25 00:02:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-25 00:02:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-09-25 00:02:31,222 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 17 [2024-09-25 00:02:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:31,222 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-09-25 00:02:31,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:02:31,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-09-25 00:02:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-25 00:02:31,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:31,224 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:31,230 INFO L552 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)] Ended with exit code 0 [2024-09-25 00:02:31,424 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 00:02:31,424 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1056057055, now seen corresponding path program 1 times [2024-09-25 00:02:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:31,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565958536] [2024-09-25 00:02:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:31,426 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 00:02:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:31,430 INFO L229 MonitoredProcess]: Starting monitored process 5 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 00:02:31,431 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 (5)] Waiting until timeout for monitored process [2024-09-25 00:02:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:31,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-25 00:02:31,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:02:31,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:02:31,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 00:02:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565958536] [2024-09-25 00:02:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565958536] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:02:31,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:02:31,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-25 00:02:31,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582273273] [2024-09-25 00:02:31,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:02:31,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-25 00:02:31,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 00:02:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-25 00:02:31,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:02:31,704 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:34,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-25 00:02:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:34,241 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-25 00:02:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:02:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-09-25 00:02:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:34,243 INFO L225 Difference]: With dead ends: 41 [2024-09-25 00:02:34,243 INFO L226 Difference]: Without dead ends: 34 [2024-09-25 00:02:34,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-25 00:02:34,245 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:34,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 85 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2024-09-25 00:02:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-25 00:02:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-25 00:02:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 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 00:02:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-25 00:02:34,262 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2024-09-25 00:02:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:34,262 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-25 00:02:34,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:02:34,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-25 00:02:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:02:34,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:34,264 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:34,272 INFO L552 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 (5)] Ended with exit code 0 [2024-09-25 00:02:34,465 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 00:02:34,465 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:34,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1090652054, now seen corresponding path program 1 times [2024-09-25 00:02:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:34,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531165848] [2024-09-25 00:02:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:34,466 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 00:02:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:34,467 INFO L229 MonitoredProcess]: Starting monitored process 6 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 00:02:34,468 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 (6)] Waiting until timeout for monitored process [2024-09-25 00:02:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:02:34,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-25 00:02:34,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:02:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:02:34,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:02:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:02:34,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-25 00:02:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531165848] [2024-09-25 00:02:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531165848] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:02:34,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-25 00:02:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-09-25 00:02:34,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098835870] [2024-09-25 00:02:34,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-25 00:02:34,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-25 00:02:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-25 00:02:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-25 00:02:34,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-09-25 00:02:34,806 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 00:02:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:02:35,802 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-09-25 00:02:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:02:35,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2024-09-25 00:02:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:02:35,804 INFO L225 Difference]: With dead ends: 69 [2024-09-25 00:02:35,805 INFO L226 Difference]: Without dead ends: 62 [2024-09-25 00:02:35,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:02:35,806 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-09-25 00:02:35,806 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 99 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-25 00:02:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-09-25 00:02:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2024-09-25 00:02:35,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 44 states have internal predecessors, (52), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:02:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-09-25 00:02:35,825 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 27 [2024-09-25 00:02:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:02:35,825 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-09-25 00:02:35,825 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-09-25 00:02:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-09-25 00:02:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-25 00:02:35,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:02:35,826 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:02:35,835 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 (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:02:36,027 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 00:02:36,028 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:02:36,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:02:36,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1088864594, now seen corresponding path program 1 times [2024-09-25 00:02:36,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-25 00:02:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14594501] [2024-09-25 00:02:36,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:02:36,029 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 00:02:36,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-25 00:02:36,030 INFO L229 MonitoredProcess]: Starting monitored process 7 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 00:02:36,031 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 (7)] Waiting until timeout for monitored process