./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/elimination_max_rec.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/elimination_max_rec.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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:34:25,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:34:25,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:34:25,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:34:25,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:34:25,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:34:25,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:34:25,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:34:25,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:34:25,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:34:25,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:34:25,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:34:25,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:34:25,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:34:25,883 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:34:25,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:34:25,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:34:25,884 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:34:25,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:34:25,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:34:25,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:34:25,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:34:25,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:34:25,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:34:25,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:34:25,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:34:25,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:34:25,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:34:25,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:34:25,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:34:25,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:34:25,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:34:25,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:34:25,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:34:25,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:34:25,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:34:25,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:34:25,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:34:25,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:34:25,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:34:25,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:34:25,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:34:25,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:34:26,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:34:26,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:34:26,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:34:26,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:34:26,208 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:34:26,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-13 03:34:27,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:34:27,750 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:34:27,750 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-13 03:34:27,757 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/cf0702f86/82e31fe7bdd742e784fa7998fd56c2f3/FLAG0bb9c5842 [2024-09-13 03:34:27,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/cf0702f86/82e31fe7bdd742e784fa7998fd56c2f3 [2024-09-13 03:34:27,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:34:27,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:34:27,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:34:27,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:34:27,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:34:27,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:34:27" (1/1) ... [2024-09-13 03:34:27,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6568246e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:27, skipping insertion in model container [2024-09-13 03:34:27,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:34:27" (1/1) ... [2024-09-13 03:34:27,802 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:34:27,948 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-13 03:34:27,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:34:27,976 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:34:27,986 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-13 03:34:27,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:34:28,016 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:34:28,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28 WrapperNode [2024-09-13 03:34:28,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:34:28,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:34:28,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:34:28,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:34:28,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,042 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:34:28,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:34:28,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:34:28,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:34:28,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:34:28,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,076 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-13 03:34:28,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:34:28,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:34:28,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:34:28,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:34:28,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (1/1) ... [2024-09-13 03:34:28,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:34:28,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:34:28,124 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) [2024-09-13 03:34:28,126 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 [2024-09-13 03:34:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:34:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 03:34:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 03:34:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:34:28,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-13 03:34:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:34:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-13 03:34:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:34:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:34:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-13 03:34:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-13 03:34:28,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-13 03:34:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-13 03:34:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 03:34:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 03:34:28,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 03:34:28,244 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:34:28,246 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:34:28,419 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-13 03:34:28,419 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:34:28,446 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:34:28,447 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:34:28,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:34:28 BoogieIcfgContainer [2024-09-13 03:34:28,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:34:28,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:34:28,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:34:28,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:34:28,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:34:27" (1/3) ... [2024-09-13 03:34:28,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b9e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:34:28, skipping insertion in model container [2024-09-13 03:34:28,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:28" (2/3) ... [2024-09-13 03:34:28,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0b9e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:34:28, skipping insertion in model container [2024-09-13 03:34:28,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:34:28" (3/3) ... [2024-09-13 03:34:28,456 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-13 03:34:28,471 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:34:28,471 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:34:28,527 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:34:28,533 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;@43a9c7c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:34:28,533 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:34:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 03:34:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:34:28,555 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:28,556 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:28,556 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:28,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:28,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-13 03:34:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:34:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681676615] [2024-09-13 03:34:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:28,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:34:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:28,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:34:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:28,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:34:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:28,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 03:34:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:34:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681676615] [2024-09-13 03:34:28,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681676615] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:34:28,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:34:28,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 03:34:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762491421] [2024-09-13 03:34:28,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:34:28,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 03:34:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:34:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 03:34:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 03:34:28,819 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:28,956 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-13 03:34:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 03:34:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-13 03:34:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:28,964 INFO L225 Difference]: With dead ends: 72 [2024-09-13 03:34:28,964 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 03:34:28,967 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 03:34:28,970 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:28,971 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 16 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:34:28,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 03:34:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-13 03:34:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 03:34:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-13 03:34:29,003 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-13 03:34:29,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:29,003 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-13 03:34:29,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:29,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-13 03:34:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:34:29,005 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:29,006 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:29,006 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:34:29,006 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:29,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:29,007 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-13 03:34:29,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:34:29,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366737736] [2024-09-13 03:34:29,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:34:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:29,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:34:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:29,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:34:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:29,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 03:34:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:34:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366737736] [2024-09-13 03:34:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366737736] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:34:29,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:34:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-13 03:34:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432634243] [2024-09-13 03:34:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:34:29,417 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 03:34:29,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:34:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 03:34:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 03:34:29,419 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 03:34:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:29,743 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-09-13 03:34:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 03:34:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2024-09-13 03:34:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:29,746 INFO L225 Difference]: With dead ends: 62 [2024-09-13 03:34:29,746 INFO L226 Difference]: Without dead ends: 60 [2024-09-13 03:34:29,747 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-09-13 03:34:29,750 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:29,750 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 46 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:34:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-13 03:34:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-09-13 03:34:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-13 03:34:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-09-13 03:34:29,777 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 22 [2024-09-13 03:34:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:29,778 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-09-13 03:34:29,778 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-13 03:34:29,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-09-13 03:34:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 03:34:29,780 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:29,780 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, 1, 1, 1, 1, 1] [2024-09-13 03:34:29,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 03:34:29,781 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:29,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-13 03:34:29,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:34:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399272526] [2024-09-13 03:34:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:29,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:34:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:34:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:34:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 03:34:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 03:34:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:34:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399272526] [2024-09-13 03:34:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399272526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:34:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097470877] [2024-09-13 03:34:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:34:30,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:34:30,150 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) [2024-09-13 03:34:30,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:34:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:30,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 03:34:30,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:30,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 03:34:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097470877] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:34:30,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 03:34:30,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-13 03:34:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697597255] [2024-09-13 03:34:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:34:30,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 03:34:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:34:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 03:34:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:34:30,425 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 03:34:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:30,637 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2024-09-13 03:34:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:34:30,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-09-13 03:34:30,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:30,639 INFO L225 Difference]: With dead ends: 70 [2024-09-13 03:34:30,639 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 03:34:30,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-13 03:34:30,641 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:30,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 187 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:34:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 03:34:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 39. [2024-09-13 03:34:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 03:34:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-13 03:34:30,656 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2024-09-13 03:34:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:30,657 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-13 03:34:30,658 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 03:34:30,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-13 03:34:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-13 03:34:30,660 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:30,660 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:30,678 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 03:34:30,861 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 [2024-09-13 03:34:30,861 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:30,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-13 03:34:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:34:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557389689] [2024-09-13 03:34:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:34:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:34:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:34:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 03:34:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-13 03:34:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 03:34:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 03:34:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 03:34:31,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:34:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557389689] [2024-09-13 03:34:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557389689] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:34:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089201035] [2024-09-13 03:34:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:31,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:34:31,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:34:31,283 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) [2024-09-13 03:34:31,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:34:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:31,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-13 03:34:31,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:31,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-09-13 03:34:31,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2024-09-13 03:34:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:31,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:34:35,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089201035] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:34:35,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:34:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2024-09-13 03:34:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181190633] [2024-09-13 03:34:35,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:34:35,866 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 03:34:35,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:34:35,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 03:34:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-09-13 03:34:35,867 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 20 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 03:34:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:36,351 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-13 03:34:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 03:34:36,352 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 41 [2024-09-13 03:34:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:36,352 INFO L225 Difference]: With dead ends: 45 [2024-09-13 03:34:36,352 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:34:36,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-09-13 03:34:36,354 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:36,354 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 56 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:34:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:34:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:34:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 03:34:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:34:36,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2024-09-13 03:34:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:36,356 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:34:36,356 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 2.4375) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-13 03:34:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:34:36,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:34:36,359 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:34:36,377 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 03:34:36,560 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 [2024-09-13 03:34:36,563 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-13 03:34:36,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:34:37,672 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:34:37,686 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:126) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:109) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionToString(BacktranslationService.java:92) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.translateTerm(ProcedureContractResult.java:69) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.(ProcedureContractResult.java:59) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:194) 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) [2024-09-13 03:34:37,691 INFO L158 Benchmark]: Toolchain (without parser) took 9919.16ms. Allocated memory was 180.4MB in the beginning and 243.3MB in the end (delta: 62.9MB). Free memory was 122.6MB in the beginning and 173.4MB in the end (delta: -50.8MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,693 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 180.4MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:34:37,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.73ms. Allocated memory is still 180.4MB. Free memory was 122.2MB in the beginning and 110.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.29ms. Allocated memory is still 180.4MB. Free memory was 110.8MB in the beginning and 109.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,694 INFO L158 Benchmark]: Boogie Preprocessor took 45.10ms. Allocated memory is still 180.4MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,694 INFO L158 Benchmark]: RCFGBuilder took 358.44ms. Allocated memory is still 180.4MB. Free memory was 107.5MB in the beginning and 92.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,697 INFO L158 Benchmark]: TraceAbstraction took 9240.97ms. Allocated memory was 180.4MB in the beginning and 243.3MB in the end (delta: 62.9MB). Free memory was 91.6MB in the beginning and 173.4MB in the end (delta: -81.8MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2024-09-13 03:34:37,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 180.4MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.73ms. Allocated memory is still 180.4MB. Free memory was 122.2MB in the beginning and 110.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.29ms. Allocated memory is still 180.4MB. Free memory was 110.8MB in the beginning and 109.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.10ms. Allocated memory is still 180.4MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.44ms. Allocated memory is still 180.4MB. Free memory was 107.5MB in the beginning and 92.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9240.97ms. Allocated memory was 180.4MB in the beginning and 243.3MB in the end (delta: 62.9MB). Free memory was 91.6MB in the beginning and 173.4MB in the end (delta: -81.8MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 70 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=2, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 184 ConstructedInterpolants, 13 QuantifiedInterpolants, 680 SizeOfPredicates, 17 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 17/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 03:34:37,724 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/verifythis/elimination_max_rec.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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:34:39,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:34:39,944 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-13 03:34:39,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:34:39,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:34:39,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:34:39,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:34:39,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:34:39,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:34:39,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:34:39,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:34:39,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:34:39,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:34:39,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:34:39,990 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:34:39,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:34:39,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:34:39,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:34:39,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:34:39,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:34:39,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:34:39,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:34:39,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:34:39,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-13 03:34:39,995 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-13 03:34:39,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:34:39,996 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-13 03:34:39,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:34:39,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:34:39,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:34:39,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:34:39,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:34:39,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:34:39,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:34:39,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:34:39,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:34:39,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:34:40,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:34:40,000 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-13 03:34:40,000 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-13 03:34:40,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:34:40,004 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:34:40,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:34:40,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:34:40,005 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-13 03:34:40,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:34:40,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:34:40,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:34:40,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:34:40,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:34:40,348 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:34:40,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-13 03:34:41,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:34:42,058 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:34:42,058 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-13 03:34:42,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2bafa637c/afe636d0df014af8bac9830fd9f9f60b/FLAG014ef6bb9 [2024-09-13 03:34:42,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2bafa637c/afe636d0df014af8bac9830fd9f9f60b [2024-09-13 03:34:42,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:34:42,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:34:42,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:34:42,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:34:42,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:34:42,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59246f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42, skipping insertion in model container [2024-09-13 03:34:42,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:34:42,648 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-13 03:34:42,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:34:42,688 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:34:42,700 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-13 03:34:42,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:34:42,732 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:34:42,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42 WrapperNode [2024-09-13 03:34:42,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:34:42,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:34:42,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:34:42,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:34:42,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,765 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:34:42,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:34:42,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:34:42,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:34:42,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:34:42,775 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,799 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-09-13 03:34:42,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:34:42,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:34:42,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:34:42,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:34:42,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (1/1) ... [2024-09-13 03:34:42,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:34:42,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:34:42,854 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) [2024-09-13 03:34:42,856 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 [2024-09-13 03:34:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:34:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-13 03:34:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-13 03:34:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 03:34:42,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 03:34:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:34:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:34:42,906 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-13 03:34:42,906 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-13 03:34:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:34:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:34:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-13 03:34:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-13 03:34:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-13 03:34:42,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:34:42,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:34:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-13 03:34:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-13 03:34:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 03:34:42,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 03:34:42,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-13 03:34:42,999 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:34:43,001 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:34:43,188 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-13 03:34:43,189 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:34:43,220 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:34:43,224 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:34:43,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:34:43 BoogieIcfgContainer [2024-09-13 03:34:43,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:34:43,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:34:43,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:34:43,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:34:43,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:34:42" (1/3) ... [2024-09-13 03:34:43,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c2034d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:34:43, skipping insertion in model container [2024-09-13 03:34:43,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:34:42" (2/3) ... [2024-09-13 03:34:43,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c2034d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:34:43, skipping insertion in model container [2024-09-13 03:34:43,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:34:43" (3/3) ... [2024-09-13 03:34:43,233 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-13 03:34:43,247 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:34:43,247 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:34:43,310 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:34:43,317 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;@1df51247, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:34:43,317 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:34:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 03:34:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:34:43,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:43,330 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:43,331 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:43,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:43,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-13 03:34:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 03:34:43,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392479690] [2024-09-13 03:34:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:43,350 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 [2024-09-13 03:34:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 03:34:43,353 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) [2024-09-13 03:34:43,355 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 [2024-09-13 03:34:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:43,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-13 03:34:43,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:43,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 03:34:43,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 03:34:43,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392479690] [2024-09-13 03:34:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392479690] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:34:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:34:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 03:34:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925868792] [2024-09-13 03:34:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:34:43,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 03:34:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 03:34:43,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 03:34:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 03:34:43,533 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:43,570 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-13 03:34:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 03:34:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-13 03:34:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:43,580 INFO L225 Difference]: With dead ends: 72 [2024-09-13 03:34:43,580 INFO L226 Difference]: Without dead ends: 35 [2024-09-13 03:34:43,583 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 03:34:43,586 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:43,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 03:34:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-13 03:34:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-13 03:34:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 03:34:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-13 03:34:43,619 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-13 03:34:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:43,619 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-13 03:34:43,619 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:43,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-13 03:34:43,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:34:43,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:43,623 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:43,629 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 (2)] Ended with exit code 0 [2024-09-13 03:34:43,824 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 [2024-09-13 03:34:43,825 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:43,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-13 03:34:43,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 03:34:43,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439286548] [2024-09-13 03:34:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:43,826 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 [2024-09-13 03:34:43,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 03:34:43,830 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) [2024-09-13 03:34:43,833 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 [2024-09-13 03:34:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:43,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-13 03:34:43,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:44,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 03:34:44,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 03:34:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439286548] [2024-09-13 03:34:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439286548] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:34:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:34:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-13 03:34:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194894791] [2024-09-13 03:34:44,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:34:44,298 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 03:34:44,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 03:34:44,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 03:34:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-13 03:34:44,299 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:44,621 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-09-13 03:34:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 03:34:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-09-13 03:34:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:44,623 INFO L225 Difference]: With dead ends: 54 [2024-09-13 03:34:44,624 INFO L226 Difference]: Without dead ends: 49 [2024-09-13 03:34:44,624 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:34:44,627 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:44,629 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 179 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:34:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-13 03:34:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-13 03:34:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 03:34:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-09-13 03:34:44,655 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2024-09-13 03:34:44,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:44,655 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-09-13 03:34:44,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 03:34:44,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:44,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-09-13 03:34:44,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 03:34:44,657 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:44,657 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, 1, 1, 1, 1, 1] [2024-09-13 03:34:44,662 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 (3)] Ended with exit code 0 [2024-09-13 03:34:44,859 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 [2024-09-13 03:34:44,860 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:44,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-13 03:34:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 03:34:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54392958] [2024-09-13 03:34:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:44,862 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 [2024-09-13 03:34:44,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 03:34:44,865 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) [2024-09-13 03:34:44,867 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 [2024-09-13 03:34:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:44,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-13 03:34:44,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:45,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:34:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:45,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 03:34:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54392958] [2024-09-13 03:34:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54392958] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:34:45,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:34:45,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2024-09-13 03:34:45,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364625034] [2024-09-13 03:34:45,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:34:45,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-13 03:34:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 03:34:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-13 03:34:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-09-13 03:34:45,808 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 03:34:47,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:34:47,160 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2024-09-13 03:34:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 03:34:47,161 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 32 [2024-09-13 03:34:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:34:47,164 INFO L225 Difference]: With dead ends: 108 [2024-09-13 03:34:47,164 INFO L226 Difference]: Without dead ends: 106 [2024-09-13 03:34:47,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-09-13 03:34:47,165 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 60 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-13 03:34:47,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 523 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-13 03:34:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-13 03:34:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2024-09-13 03:34:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 52 states have internal predecessors, (56), 24 states have call successors, (24), 11 states have call predecessors, (24), 9 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-13 03:34:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2024-09-13 03:34:47,192 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 32 [2024-09-13 03:34:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:34:47,192 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2024-09-13 03:34:47,193 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 6 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-13 03:34:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2024-09-13 03:34:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-13 03:34:47,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:34:47,195 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:34:47,198 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 (4)] Forceful destruction successful, exit code 0 [2024-09-13 03:34:47,396 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 [2024-09-13 03:34:47,396 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:34:47,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:34:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-13 03:34:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 03:34:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525400117] [2024-09-13 03:34:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:47,397 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 [2024-09-13 03:34:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 03:34:47,399 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) [2024-09-13 03:34:47,400 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 [2024-09-13 03:34:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:47,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 03:34:47,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:53,231 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 03:34:53,232 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-13 03:34:53,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-13 03:34:53,411 INFO L349 Elim1Store]: treesize reduction 96, result has 47.3 percent of original size [2024-09-13 03:34:53,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 56 treesize of output 101 [2024-09-13 03:34:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:34:53,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:34:53,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 03:34:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525400117] [2024-09-13 03:34:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525400117] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:34:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1235839366] [2024-09-13 03:34:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:34:53,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-13 03:34:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-13 03:34:53,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-09-13 03:34:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-09-13 03:34:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:34:53,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-13 03:34:53,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:34:53,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2024-09-13 03:35:26,345 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 (_ BitVec 32))) (= (select |c_#memory_int#1| v_check_~a.base_BEFORE_CALL_3) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 03:35:36,929 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_4 (_ BitVec 32))) (= (select |c_#memory_int#1| v_check_~a.base_BEFORE_CALL_4) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 03:35:42,424 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 (_ BitVec 32))) (= (select |c_#memory_int#1| v_check_~a.base_BEFORE_CALL_5) ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) is different from true [2024-09-13 03:35:45,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2024-09-13 03:35:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-09-13 03:35:46,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:36:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1235839366] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:36:10,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:36:10,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 33 [2024-09-13 03:36:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417731627] [2024-09-13 03:36:10,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:36:10,522 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-13 03:36:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 03:36:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-13 03:36:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1078, Unknown=13, NotChecked=204, Total=1406 [2024-09-13 03:36:10,524 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 33 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 10 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-13 03:36:14,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 03:36:18,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-13 03:38:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:38:46,189 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2024-09-13 03:38:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-13 03:38:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 10 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) Word has length 41 [2024-09-13 03:38:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:38:46,191 INFO L225 Difference]: With dead ends: 145 [2024-09-13 03:38:46,191 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 03:38:46,193 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 224.8s TimeCoverageRelationStatistics Valid=358, Invalid=2701, Unknown=33, NotChecked=330, Total=3422 [2024-09-13 03:38:46,194 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:38:46,195 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 419 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 560 Invalid, 2 Unknown, 179 Unchecked, 12.5s Time] [2024-09-13 03:38:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 03:38:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-09-13 03:38:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 12 states have call successors, (12), 11 states have call predecessors, (12), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 03:38:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-09-13 03:38:46,210 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 41 [2024-09-13 03:38:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:38:46,210 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-09-13 03:38:46,210 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 24 states have internal predecessors, (47), 10 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-13 03:38:46,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:38:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-09-13 03:38:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-13 03:38:46,212 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:38:46,212 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, 1, 1, 1, 1, 1] [2024-09-13 03:38:46,216 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 (5)] Forceful destruction successful, exit code 0 [2024-09-13 03:38:46,416 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-09-13 03:38:46,613 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=3,6 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt [2024-09-13 03:38:46,614 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:38:46,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:38:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash -837710144, now seen corresponding path program 1 times [2024-09-13 03:38:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-13 03:38:46,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503148572] [2024-09-13 03:38:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:38:46,615 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 [2024-09-13 03:38:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-13 03:38:46,618 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) [2024-09-13 03:38:46,621 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 [2024-09-13 03:38:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:38:46,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-13 03:38:46,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:38:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:38:48,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:38:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 03:38:52,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-13 03:38:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503148572] [2024-09-13 03:38:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503148572] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:38:52,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-13 03:38:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2024-09-13 03:38:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944687566] [2024-09-13 03:38:52,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-13 03:38:52,228 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-13 03:38:52,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-13 03:38:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-13 03:38:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2024-09-13 03:38:52,233 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 31 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 23 states have internal predecessors, (54), 12 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-13 03:39:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:39:01,664 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-09-13 03:39:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 03:39:01,665 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 23 states have internal predecessors, (54), 12 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 52 [2024-09-13 03:39:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:39:01,666 INFO L225 Difference]: With dead ends: 85 [2024-09-13 03:39:01,666 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:39:01,668 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2024-09-13 03:39:01,669 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:39:01,669 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 278 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-09-13 03:39:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:39:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:39:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 03:39:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:39:01,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-09-13 03:39:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:39:01,671 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:39:01,671 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 23 states have internal predecessors, (54), 12 states have call successors, (21), 10 states have call predecessors, (21), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2024-09-13 03:39:01,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:39:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:39:01,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:39:01,674 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:39:01,681 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 (7)] Forceful destruction successful, exit code 0 [2024-09-13 03:39:01,878 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2024-09-13 03:39:01,881 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-13 03:39:01,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:39:14,166 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 56 DAG size of output: 3 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:39:20,239 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 129 DAG size of output: 15 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:39:38,320 WARN L293 SmtUtils]: Spent 18.00s on a formula simplification. DAG size of input: 173 DAG size of output: 78 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:39:44,462 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 179 DAG size of output: 57 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:39:54,643 WARN L293 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 166 DAG size of output: 40 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:40:10,967 WARN L293 SmtUtils]: Spent 16.32s on a formula simplification. DAG size of input: 56 DAG size of output: 19 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:40:23,447 WARN L293 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 56 DAG size of output: 19 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:40:44,383 WARN L293 SmtUtils]: Spent 20.93s on a formula simplification. DAG size of input: 56 DAG size of output: 19 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:40:51,204 WARN L293 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 170 DAG size of output: 57 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:41:01,229 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 204 DAG size of output: 76 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:41:13,303 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification. DAG size of input: 166 DAG size of output: 40 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:41:18,639 WARN L293 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 154 DAG size of output: 50 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:11,327 WARN L293 SmtUtils]: Spent 52.68s on a formula simplification. DAG size of input: 60 DAG size of output: 21 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:22,638 WARN L293 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 172 DAG size of output: 70 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:34,179 WARN L293 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 183 DAG size of output: 82 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:42,848 WARN L293 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 170 DAG size of output: 57 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:52,265 WARN L293 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 172 DAG size of output: 70 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:58,527 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 168 DAG size of output: 58 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-09-13 03:42:58,537 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:42:58,553 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:235) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:126) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:109) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionToString(BacktranslationService.java:92) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.translateTerm(ProcedureContractResult.java:69) at de.uni_freiburg.informatik.ultimate.core.lib.results.ProcedureContractResult.(ProcedureContractResult.java:59) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:194) 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) [2024-09-13 03:42:58,556 INFO L158 Benchmark]: Toolchain (without parser) took 496100.43ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 33.2MB in the beginning and 72.9MB in the end (delta: -39.7MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,556 INFO L158 Benchmark]: CDTParser took 0.98ms. Allocated memory is still 50.3MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:42:58,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.27ms. Allocated memory is still 65.0MB. Free memory was 33.1MB in the beginning and 37.2MB in the end (delta: -4.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,556 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.87ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 36.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,557 INFO L158 Benchmark]: Boogie Preprocessor took 53.84ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 34.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,558 INFO L158 Benchmark]: RCFGBuilder took 404.07ms. Allocated memory is still 65.0MB. Free memory was 34.0MB in the beginning and 39.3MB in the end (delta: -5.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,558 INFO L158 Benchmark]: TraceAbstraction took 495329.09ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 38.5MB in the beginning and 72.9MB in the end (delta: -34.4MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2024-09-13 03:42:58,560 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98ms. Allocated memory is still 50.3MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.27ms. Allocated memory is still 65.0MB. Free memory was 33.1MB in the beginning and 37.2MB in the end (delta: -4.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.87ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 36.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.84ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 34.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.07ms. Allocated memory is still 65.0MB. Free memory was 34.0MB in the beginning and 39.3MB in the end (delta: -5.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 495329.09ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 38.5MB in the beginning and 72.9MB in the end (delta: -34.4MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 258.6s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 166.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 15.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 1439 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 179 IncrementalHoareTripleChecker+Unchecked, 1290 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1805 IncrementalHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 149 mSDtfsCounter, 1805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 370 GetRequests, 209 SyntacticMatches, 9 SemanticMatches, 152 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 236.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 89.7s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 286 ConstructedInterpolants, 24 QuantifiedInterpolants, 2452 SizeOfPredicates, 38 NumberOfNonLiveVariables, 608 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 52/116 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (0 != \old(cond)) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-09-13 03:42:58,730 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias