./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 a9b967e5 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-a9b967e-m [2024-09-12 16:31:41,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:31:41,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:31:41,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:31:41,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:31:41,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:31:41,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:31:41,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:31:41,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:31:41,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:31:41,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:31:41,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:31:41,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:31:41,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:31:41,346 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:31:41,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:31:41,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:31:41,349 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:31:41,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:31:41,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:31:41,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:31:41,350 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:31:41,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:31:41,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:31:41,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:31:41,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:31:41,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:41,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:31:41,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:31:41,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:31:41,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:31:41,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:31:41,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:31:41,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:31:41,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:31:41,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:31:41,630 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:31:41,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-12 16:31:42,147 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:31:43,795 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:31:43,795 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-12 16:31:43,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f6b3589d8/e07860eadfd640b58b080e1ae6a7b8e6/FLAGef6ef5723 [2024-09-12 16:31:43,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f6b3589d8/e07860eadfd640b58b080e1ae6a7b8e6 [2024-09-12 16:31:43,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:31:43,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:31:43,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:43,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:31:43,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:31:43,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:43" (1/1) ... [2024-09-12 16:31:43,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6deb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:43, skipping insertion in model container [2024-09-12 16:31:43,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:43" (1/1) ... [2024-09-12 16:31:43,842 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:31:43,948 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] [2024-09-12 16:31:43,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:43,988 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:31:43,997 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] [2024-09-12 16:31:44,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:44,040 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:31:44,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44 WrapperNode [2024-09-12 16:31:44,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:44,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:44,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:31:44,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:31:44,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,065 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:31:44,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:44,067 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:31:44,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:31:44,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:31:44,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,093 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]. [2024-09-12 16:31:44,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:31:44,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:31:44,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:31:44,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:31:44,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (1/1) ... [2024-09-12 16:31:44,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:44,142 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) [2024-09-12 16:31:44,149 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 [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 16:31:44,182 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:31:44,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 16:31:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-12 16:31:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:31:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:31:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 16:31:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-12 16:31:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-12 16:31:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 16:31:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 16:31:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 16:31:44,253 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:31:44,255 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:31:44,393 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-12 16:31:44,393 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:31:44,424 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:31:44,424 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:31:44,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:44 BoogieIcfgContainer [2024-09-12 16:31:44,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:31:44,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:31:44,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:31:44,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:31:44,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:31:43" (1/3) ... [2024-09-12 16:31:44,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529633d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:44, skipping insertion in model container [2024-09-12 16:31:44,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:44" (2/3) ... [2024-09-12 16:31:44,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529633d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:44, skipping insertion in model container [2024-09-12 16:31:44,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:44" (3/3) ... [2024-09-12 16:31:44,436 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-12 16:31:44,458 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:31:44,462 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:31:44,499 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:31:44,505 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;@41621b87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:31:44,505 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:31:44,508 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) [2024-09-12 16:31:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:31:44,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:44,514 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] [2024-09-12 16:31:44,514 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:44,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-12 16:31:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:44,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749653503] [2024-09-12 16:31:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:44,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:44,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:44,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:31:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:44,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749653503] [2024-09-12 16:31:44,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749653503] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:44,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:31:44,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-12 16:31:44,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891938533] [2024-09-12 16:31:44,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:44,687 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 16:31:44,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:44,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 16:31:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 16:31:44,714 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) [2024-09-12 16:31:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:44,839 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-12 16:31:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 16:31:44,841 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 [2024-09-12 16:31:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:44,847 INFO L225 Difference]: With dead ends: 72 [2024-09-12 16:31:44,847 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 16:31:44,849 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 [2024-09-12 16:31:44,853 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 [2024-09-12 16:31:44,854 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] [2024-09-12 16:31:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 16:31:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-12 16:31:44,885 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) [2024-09-12 16:31:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-12 16:31:44,889 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-12 16:31:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:44,890 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-12 16:31:44,890 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) [2024-09-12 16:31:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-12 16:31:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:31:44,894 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:44,894 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] [2024-09-12 16:31:44,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:31:44,895 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:44,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-12 16:31:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019365375] [2024-09-12 16:31:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:31:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:45,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:45,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019365375] [2024-09-12 16:31:45,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019365375] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:45,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:31:45,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-12 16:31:45,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158901048] [2024-09-12 16:31:45,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:45,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-12 16:31:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-12 16:31:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-12 16:31:45,273 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) [2024-09-12 16:31:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:45,537 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-09-12 16:31:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 16:31:45,538 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 [2024-09-12 16:31:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:45,540 INFO L225 Difference]: With dead ends: 62 [2024-09-12 16:31:45,540 INFO L226 Difference]: Without dead ends: 60 [2024-09-12 16:31:45,541 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 [2024-09-12 16:31:45,541 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 [2024-09-12 16:31:45,542 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] [2024-09-12 16:31:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-12 16:31:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-09-12 16:31:45,553 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) [2024-09-12 16:31:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-09-12 16:31:45,555 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 22 [2024-09-12 16:31:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:45,555 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-09-12 16:31:45,555 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) [2024-09-12 16:31:45,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:45,556 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-09-12 16:31:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 16:31:45,556 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:45,557 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] [2024-09-12 16:31:45,557 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 16:31:45,557 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:45,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-12 16:31:45,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:45,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055038264] [2024-09-12 16:31:45,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:31:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 16:31:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:45,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055038264] [2024-09-12 16:31:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055038264] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825678569] [2024-09-12 16:31:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:45,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:45,899 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) [2024-09-12 16:31:45,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:31:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:45,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-12 16:31:46,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:46,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:31:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825678569] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 16:31:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-12 16:31:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21156491] [2024-09-12 16:31:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:46,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-12 16:31:46,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-12 16:31:46,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-12 16:31:46,140 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) [2024-09-12 16:31:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:46,305 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2024-09-12 16:31:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:31:46,305 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 [2024-09-12 16:31:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:46,306 INFO L225 Difference]: With dead ends: 70 [2024-09-12 16:31:46,306 INFO L226 Difference]: Without dead ends: 68 [2024-09-12 16:31:46,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-12 16:31:46,307 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 [2024-09-12 16:31:46,308 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] [2024-09-12 16:31:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-12 16:31:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 39. [2024-09-12 16:31:46,320 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) [2024-09-12 16:31:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-12 16:31:46,321 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2024-09-12 16:31:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:46,321 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-12 16:31:46,321 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) [2024-09-12 16:31:46,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-12 16:31:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 16:31:46,322 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:46,322 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] [2024-09-12 16:31:46,335 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:31:46,526 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 [2024-09-12 16:31:46,527 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:46,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-12 16:31:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090057836] [2024-09-12 16:31:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:46,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 16:31:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-12 16:31:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 16:31:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-12 16:31:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-12 16:31:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090057836] [2024-09-12 16:31:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090057836] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617958993] [2024-09-12 16:31:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:46,726 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) [2024-09-12 16:31:46,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:31:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:46,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 16:31:46,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:46,808 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 [2024-09-12 16:31:47,052 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 [2024-09-12 16:31:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:47,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617958993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:51,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:31:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2024-09-12 16:31:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71582566] [2024-09-12 16:31:51,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:51,213 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 16:31:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 16:31:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:31:51,218 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) [2024-09-12 16:31:51,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:51,552 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-12 16:31:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:31:51,552 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 [2024-09-12 16:31:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:51,553 INFO L225 Difference]: With dead ends: 45 [2024-09-12 16:31:51,553 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:31:51,553 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-09-12 16:31:51,554 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:51,554 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 56 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:31:51,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:31:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:31:51,555 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) [2024-09-12 16:31:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:31:51,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2024-09-12 16:31:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:51,555 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:31:51,555 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) [2024-09-12 16:31:51,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:31:51,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:31:51,560 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:31:51,586 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-12 16:31:51,760 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 [2024-09-12 16:31:51,763 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-12 16:31:51,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:31:52,555 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:31:52,564 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) [2024-09-12 16:31:52,571 INFO L158 Benchmark]: Toolchain (without parser) took 8752.16ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 68.0MB in the beginning and 92.9MB in the end (delta: -24.9MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2024-09-12 16:31:52,571 INFO L158 Benchmark]: CDTParser took 4.00ms. Allocated memory is still 60.8MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:31:52,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.67ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 84.6MB in the end (delta: -16.6MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-09-12 16:31:52,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.02ms. Allocated memory is still 104.9MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:31:52,571 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 104.9MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:31:52,572 INFO L158 Benchmark]: RCFGBuilder took 317.09ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 66.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-12 16:31:52,572 INFO L158 Benchmark]: TraceAbstraction took 8143.92ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 65.9MB in the beginning and 92.9MB in the end (delta: -27.1MB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. [2024-09-12 16:31:52,576 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.00ms. Allocated memory is still 60.8MB. Free memory was 32.3MB in the beginning and 32.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.67ms. Allocated memory is still 104.9MB. Free memory was 68.0MB in the beginning and 84.6MB in the end (delta: -16.6MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.02ms. Allocated memory is still 104.9MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 104.9MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.09ms. Allocated memory is still 104.9MB. Free memory was 81.4MB in the beginning and 66.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8143.92ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 65.9MB in the beginning and 92.9MB in the end (delta: -27.1MB). Peak memory consumption was 59.6MB. 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: 7.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 0.5s 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, 4.6s 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.5s 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. [2024-09-12 16:31:52,604 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 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-a9b967e-m [2024-09-12 16:31:54,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:31:54,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-12 16:31:54,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:31:54,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:31:54,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:31:54,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:31:54,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:31:54,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:31:54,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:31:54,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:31:54,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:31:54,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:31:54,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:31:54,647 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:31:54,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:31:54,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:31:54,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:31:54,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:31:54,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:31:54,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:31:54,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:31:54,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:31:54,655 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-12 16:31:54,655 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-12 16:31:54,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:31:54,656 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-12 16:31:54,656 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:31:54,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:31:54,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:31:54,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:31:54,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:31:54,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:31:54,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:31:54,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:54,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:31:54,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:31:54,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:31:54,658 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-12 16:31:54,659 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-12 16:31:54,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:31:54,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:31:54,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:31:54,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:31:54,661 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-12 16:31:54,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:31:54,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:31:54,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:31:54,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:31:54,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:31:54,941 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:31:54,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-12 16:31:56,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:31:56,457 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:31:56,457 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-12 16:31:56,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c92a7f331/b7df647064eb4136a945b3f1d20f35a8/FLAGdb5fccfd3 [2024-09-12 16:31:56,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c92a7f331/b7df647064eb4136a945b3f1d20f35a8 [2024-09-12 16:31:56,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:31:56,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:31:56,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:56,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:31:56,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:31:56,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cd2e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56, skipping insertion in model container [2024-09-12 16:31:56,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:31:56,619 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] [2024-09-12 16:31:56,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:56,646 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:31:56,655 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] [2024-09-12 16:31:56,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:56,680 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:31:56,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56 WrapperNode [2024-09-12 16:31:56,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:56,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:56,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:31:56,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:31:56,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,705 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:31:56,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:56,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:31:56,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:31:56,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:31:56,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,731 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]. [2024-09-12 16:31:56,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,732 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:31:56,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:31:56,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:31:56,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:31:56,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (1/1) ... [2024-09-12 16:31:56,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:56,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:56,783 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) [2024-09-12 16:31:56,801 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 [2024-09-12 16:31:56,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:31:56,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-12 16:31:56,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-12 16:31:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-12 16:31:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-12 16:31:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:31:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:31:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-12 16:31:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-12 16:31:56,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:31:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:31:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-12 16:31:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-12 16:31:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-12 16:31:56,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-12 16:31:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 16:31:56,929 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:31:56,931 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:31:57,091 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-12 16:31:57,092 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:31:57,111 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:31:57,111 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:31:57,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:57 BoogieIcfgContainer [2024-09-12 16:31:57,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:31:57,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:31:57,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:31:57,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:31:57,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:31:56" (1/3) ... [2024-09-12 16:31:57,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3fde64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:57, skipping insertion in model container [2024-09-12 16:31:57,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:56" (2/3) ... [2024-09-12 16:31:57,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3fde64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:57, skipping insertion in model container [2024-09-12 16:31:57,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:57" (3/3) ... [2024-09-12 16:31:57,117 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-12 16:31:57,134 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:31:57,134 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:31:57,186 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:31:57,191 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;@4048d1c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:31:57,191 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:31:57,195 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) [2024-09-12 16:31:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:31:57,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:57,200 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] [2024-09-12 16:31:57,200 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:57,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-12 16:31:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-12 16:31:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826375284] [2024-09-12 16:31:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:57,214 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 [2024-09-12 16:31:57,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-12 16:31:57,217 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) [2024-09-12 16:31:57,218 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 [2024-09-12 16:31:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:57,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-12 16:31:57,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:57,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:31:57,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-12 16:31:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826375284] [2024-09-12 16:31:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826375284] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:57,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:31:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 16:31:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669050758] [2024-09-12 16:31:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:57,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-12 16:31:57,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-12 16:31:57,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-12 16:31:57,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-12 16:31:57,331 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) [2024-09-12 16:31:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:57,355 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-12 16:31:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-12 16:31:57,357 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 [2024-09-12 16:31:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:57,362 INFO L225 Difference]: With dead ends: 72 [2024-09-12 16:31:57,362 INFO L226 Difference]: Without dead ends: 35 [2024-09-12 16:31:57,366 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 [2024-09-12 16:31:57,369 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 [2024-09-12 16:31:57,371 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] [2024-09-12 16:31:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-12 16:31:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-12 16:31:57,399 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) [2024-09-12 16:31:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-12 16:31:57,403 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-12 16:31:57,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:57,404 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-12 16:31:57,404 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) [2024-09-12 16:31:57,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-12 16:31:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-12 16:31:57,407 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:57,407 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] [2024-09-12 16:31:57,415 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 [2024-09-12 16:31:57,608 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 [2024-09-12 16:31:57,609 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:57,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-12 16:31:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-12 16:31:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381997871] [2024-09-12 16:31:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:57,610 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 [2024-09-12 16:31:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-12 16:31:57,615 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) [2024-09-12 16:31:57,620 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 [2024-09-12 16:31:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:57,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-12 16:31:57,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:57,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 16:31:57,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-12 16:31:57,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381997871] [2024-09-12 16:31:57,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381997871] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:57,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:31:57,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-12 16:31:57,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110460716] [2024-09-12 16:31:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:57,948 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 16:31:57,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-12 16:31:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 16:31:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-12 16:31:57,953 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) [2024-09-12 16:31:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:58,218 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-09-12 16:31:58,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:31:58,219 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 [2024-09-12 16:31:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:58,220 INFO L225 Difference]: With dead ends: 54 [2024-09-12 16:31:58,220 INFO L226 Difference]: Without dead ends: 49 [2024-09-12 16:31:58,221 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-12 16:31:58,221 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 [2024-09-12 16:31:58,222 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] [2024-09-12 16:31:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-12 16:31:58,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-12 16:31:58,236 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) [2024-09-12 16:31:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-09-12 16:31:58,239 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2024-09-12 16:31:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:58,239 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-09-12 16:31:58,239 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) [2024-09-12 16:31:58,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-09-12 16:31:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 16:31:58,240 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:58,241 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] [2024-09-12 16:31:58,245 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-09-12 16:31:58,445 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 [2024-09-12 16:31:58,446 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:58,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-12 16:31:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-12 16:31:58,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288505391] [2024-09-12 16:31:58,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:58,447 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 [2024-09-12 16:31:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-12 16:31:58,453 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) [2024-09-12 16:31:58,455 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 [2024-09-12 16:31:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:58,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-12 16:31:58,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:58,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:59,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-12 16:31:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288505391] [2024-09-12 16:31:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288505391] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:59,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:31:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2024-09-12 16:31:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904411176] [2024-09-12 16:31:59,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:59,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 16:31:59,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-12 16:31:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 16:31:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-09-12 16:31:59,143 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) [2024-09-12 16:32:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:32:00,113 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2024-09-12 16:32:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-12 16:32:00,113 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 [2024-09-12 16:32:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:32:00,116 INFO L225 Difference]: With dead ends: 108 [2024-09-12 16:32:00,116 INFO L226 Difference]: Without dead ends: 106 [2024-09-12 16:32:00,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-09-12 16:32:00,117 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 60 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 16:32:00,118 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 523 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 16:32:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-12 16:32:00,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2024-09-12 16:32:00,133 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) [2024-09-12 16:32:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2024-09-12 16:32:00,134 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 32 [2024-09-12 16:32:00,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:32:00,135 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2024-09-12 16:32:00,135 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) [2024-09-12 16:32:00,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:32:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2024-09-12 16:32:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-12 16:32:00,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:32:00,136 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] [2024-09-12 16:32:00,140 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-09-12 16:32:00,337 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 [2024-09-12 16:32:00,337 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:32:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:32:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-12 16:32:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-12 16:32:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446901506] [2024-09-12 16:32:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:32:00,338 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 [2024-09-12 16:32:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-12 16:32:00,341 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) [2024-09-12 16:32:00,342 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 [2024-09-12 16:32:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:32:00,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-12 16:32:00,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:32:05,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 16:32:05,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-12 16:32:05,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-12 16:32:05,865 INFO L349 Elim1Store]: treesize reduction 96, result has 47.3 percent of original size [2024-09-12 16:32:05,865 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 [2024-09-12 16:32:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:32:06,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:32:06,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-12 16:32:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446901506] [2024-09-12 16:32:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446901506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:32:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1635503649] [2024-09-12 16:32:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:32:06,248 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-12 16:32:06,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-12 16:32:06,272 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) [2024-09-12 16:32:06,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-09-12 16:32:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:32:06,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-12 16:32:06,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:32:06,377 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 [2024-09-12 16:32:40,517 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 [2024-09-12 16:32:47,264 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 [2024-09-12 16:32:53,598 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 [2024-09-12 16:32:56,850 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 [2024-09-12 16:32:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-09-12 16:32:57,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:33:23,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1635503649] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:33:23,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:33:23,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 33 [2024-09-12 16:33:23,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965292529] [2024-09-12 16:33:23,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:33:23,247 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-12 16:33:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-12 16:33:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-12 16:33:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1078, Unknown=15, NotChecked=204, Total=1406 [2024-09-12 16:33:23,248 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) [2024-09-12 16:33:27,478 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] [2024-09-12 16:33:31,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 16:33:35,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-12 16:35:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:35:44,469 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2024-09-12 16:35:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-12 16:35:44,471 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 [2024-09-12 16:35:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:35:44,472 INFO L225 Difference]: With dead ends: 145 [2024-09-12 16:35:44,472 INFO L226 Difference]: Without dead ends: 56 [2024-09-12 16:35:44,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 208.7s TimeCoverageRelationStatistics Valid=339, Invalid=2612, Unknown=31, NotChecked=324, Total=3306 [2024-09-12 16:35:44,474 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 64 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 44 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:35:44,475 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 427 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 563 Invalid, 3 Unknown, 179 Unchecked, 14.2s Time] [2024-09-12 16:35:44,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-12 16:35:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-09-12 16:35:44,495 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) [2024-09-12 16:35:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-09-12 16:35:44,496 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 41 [2024-09-12 16:35:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:35:44,496 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-09-12 16:35:44,496 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) [2024-09-12 16:35:44,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:35:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-09-12 16:35:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-12 16:35:44,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:35:44,498 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] [2024-09-12 16:35:44,503 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 [2024-09-12 16:35:44,704 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-09-12 16:35:44,904 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 [2024-09-12 16:35:44,905 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:35:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:35:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -837710144, now seen corresponding path program 1 times [2024-09-12 16:35:44,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-12 16:35:44,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225824179] [2024-09-12 16:35:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:35:44,906 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 [2024-09-12 16:35:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-12 16:35:44,908 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) [2024-09-12 16:35:44,910 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 [2024-09-12 16:35:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:35:44,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-12 16:35:44,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:35:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:35:46,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:35:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:35:48,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-12 16:35:48,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225824179] [2024-09-12 16:35:48,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225824179] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:35:48,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:35:48,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2024-09-12 16:35:48,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920820095] [2024-09-12 16:35:48,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:35:48,340 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-12 16:35:48,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-12 16:35:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-12 16:35:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2024-09-12 16:35:48,341 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) [2024-09-12 16:35:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:35:55,791 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-09-12 16:35:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-12 16:35:55,793 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 [2024-09-12 16:35:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:35:55,794 INFO L225 Difference]: With dead ends: 85 [2024-09-12 16:35:55,795 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:35:55,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=610, Invalid=2582, Unknown=0, NotChecked=0, Total=3192 [2024-09-12 16:35:55,802 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 93 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-12 16:35:55,802 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 269 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-12 16:35:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:35:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:35:55,805 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) [2024-09-12 16:35:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:35:55,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2024-09-12 16:35:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:35:55,806 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:35:55,806 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) [2024-09-12 16:35:55,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:35:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:35:55,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:35:55,809 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:35:55,813 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 [2024-09-12 16:35:56,009 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 [2024-09-12 16:35:56,016 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-12 16:35:56,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:36:08,417 WARN L293 SmtUtils]: Spent 8.07s 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) [2024-09-12 16:36:20,235 WARN L293 SmtUtils]: Spent 10.98s on a formula simplification. DAG size of input: 171 DAG size of output: 78 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)