./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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:22:10,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:22:10,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:22:10,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:22:10,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:22:10,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:22:10,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:22:10,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:22:10,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:22:10,493 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:22:10,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:22:10,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:22:10,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:22:10,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:22:10,495 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:22:10,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:22:10,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:22:10,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:22:10,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:22:10,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:22:10,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:22:10,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:22:10,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:22:10,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:22:10,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:22:10,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:22:10,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:22:10,501 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:22:10,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:22:10,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:22:10,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:22:10,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:22:10,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:22:10,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:22:10,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:22:10,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:22:10,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:22:10,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:22:10,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:22:10,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:22:10,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:22:10,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:22:10,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:22:10,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:22:10,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:22:10,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:22:10,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:22:10,752 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:22:10,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-17 19:22:12,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:22:12,338 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:22:12,339 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-17 19:22:12,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9d0225848/fafb297552bf4a32a37768969c828400/FLAGbeb9c66ff [2024-09-17 19:22:12,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9d0225848/fafb297552bf4a32a37768969c828400 [2024-09-17 19:22:12,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:22:12,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:22:12,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:22:12,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:22:12,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:22:12,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:12,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d97398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12, skipping insertion in model container [2024-09-17 19:22:12,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:12,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:22:12,898 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-17 19:22:12,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:22:12,927 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:22:12,940 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-17 19:22:12,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:22:12,972 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:22:12,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12 WrapperNode [2024-09-17 19:22:12,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:22:12,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:22:12,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:22:12,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:22:12,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:12,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:12,995 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:22:12,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:22:12,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:22:12,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:22:12,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:22:13,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,027 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]. [2024-09-17 19:22:13,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,028 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:22:13,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:22:13,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:22:13,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:22:13,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (1/1) ... [2024-09-17 19:22:13,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:22:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:22:13,074 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) [2024-09-17 19:22:13,076 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 [2024-09-17 19:22:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:22:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:22:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:22:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:22:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:22:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 19:22:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-17 19:22:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-17 19:22:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-17 19:22:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:22:13,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:22:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-17 19:22:13,112 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-17 19:22:13,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:22:13,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:22:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-17 19:22:13,186 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:22:13,189 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:22:13,338 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-17 19:22:13,338 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:22:13,377 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:22:13,377 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:22:13,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:22:13 BoogieIcfgContainer [2024-09-17 19:22:13,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:22:13,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:22:13,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:22:13,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:22:13,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:22:12" (1/3) ... [2024-09-17 19:22:13,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da678c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:22:13, skipping insertion in model container [2024-09-17 19:22:13,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:12" (2/3) ... [2024-09-17 19:22:13,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da678c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:22:13, skipping insertion in model container [2024-09-17 19:22:13,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:22:13" (3/3) ... [2024-09-17 19:22:13,395 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-17 19:22:13,433 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:22:13,433 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:22:13,492 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:22:13,500 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;@1163ab2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:22:13,502 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:22:13,507 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) [2024-09-17 19:22:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 19:22:13,514 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:13,515 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] [2024-09-17 19:22:13,515 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:13,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-17 19:22:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:22:13,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017583838] [2024-09-17 19:22:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:22:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:13,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:22:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:13,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:22:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:13,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:22:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:22:13,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017583838] [2024-09-17 19:22:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017583838] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:22:13,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:22:13,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:22:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102981929] [2024-09-17 19:22:13,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:22:13,744 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-17 19:22:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:22:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-17 19:22:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-17 19:22:13,764 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) [2024-09-17 19:22:13,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:13,869 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-17 19:22:13,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-17 19:22:13,872 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 [2024-09-17 19:22:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:13,878 INFO L225 Difference]: With dead ends: 72 [2024-09-17 19:22:13,878 INFO L226 Difference]: Without dead ends: 35 [2024-09-17 19:22:13,882 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 [2024-09-17 19:22:13,886 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 [2024-09-17 19:22:13,888 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] [2024-09-17 19:22:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-17 19:22:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-17 19:22:13,926 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) [2024-09-17 19:22:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-17 19:22:13,929 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-17 19:22:13,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:13,930 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-17 19:22:13,930 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) [2024-09-17 19:22:13,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:13,931 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-17 19:22:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 19:22:13,935 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:13,935 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] [2024-09-17 19:22:13,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:22:13,936 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-17 19:22:13,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:22:13,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648446502] [2024-09-17 19:22:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:22:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:22:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:22:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:22:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:14,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:22:14,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648446502] [2024-09-17 19:22:14,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648446502] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:22:14,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:22:14,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-17 19:22:14,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642135800] [2024-09-17 19:22:14,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:22:14,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-17 19:22:14,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:22:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-17 19:22:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-17 19:22:14,326 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) [2024-09-17 19:22:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:14,618 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-09-17 19:22:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 19:22:14,619 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 [2024-09-17 19:22:14,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:14,621 INFO L225 Difference]: With dead ends: 62 [2024-09-17 19:22:14,622 INFO L226 Difference]: Without dead ends: 60 [2024-09-17 19:22:14,622 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 [2024-09-17 19:22:14,623 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 [2024-09-17 19:22:14,624 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] [2024-09-17 19:22:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-17 19:22:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-09-17 19:22:14,648 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) [2024-09-17 19:22:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-09-17 19:22:14,651 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 22 [2024-09-17 19:22:14,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:14,651 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-09-17 19:22:14,651 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) [2024-09-17 19:22:14,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-09-17 19:22:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 19:22:14,654 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:14,655 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] [2024-09-17 19:22:14,655 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:22:14,655 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:14,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-17 19:22:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:22:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631599467] [2024-09-17 19:22:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:22:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:22:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:14,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:22:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:22:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 19:22:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:15,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:22:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631599467] [2024-09-17 19:22:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631599467] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:22:15,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021091656] [2024-09-17 19:22:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:15,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:22:15,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:22:15,039 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) [2024-09-17 19:22:15,041 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:22:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-17 19:22:15,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:15,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:22:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021091656] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:22:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:22:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2024-09-17 19:22:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036416924] [2024-09-17 19:22:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:22:15,321 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-17 19:22:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:22:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-17 19:22:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:22:15,325 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) [2024-09-17 19:22:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:15,525 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2024-09-17 19:22:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 19:22:15,525 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 [2024-09-17 19:22:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:15,527 INFO L225 Difference]: With dead ends: 70 [2024-09-17 19:22:15,527 INFO L226 Difference]: Without dead ends: 68 [2024-09-17 19:22:15,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-09-17 19:22:15,529 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 [2024-09-17 19:22:15,529 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] [2024-09-17 19:22:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-17 19:22:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 39. [2024-09-17 19:22:15,544 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) [2024-09-17 19:22:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-09-17 19:22:15,545 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2024-09-17 19:22:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:15,546 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-09-17 19:22:15,546 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) [2024-09-17 19:22:15,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-09-17 19:22:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-17 19:22:15,548 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:15,548 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] [2024-09-17 19:22:15,568 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:22:15,752 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 [2024-09-17 19:22:15,753 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:15,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-17 19:22:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:22:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537681162] [2024-09-17 19:22:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:22:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 19:22:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:15,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-17 19:22:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-17 19:22:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-17 19:22:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-17 19:22:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-17 19:22:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:22:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:22:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537681162] [2024-09-17 19:22:16,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537681162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:22:16,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824758270] [2024-09-17 19:22:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:16,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:22:16,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:22:16,043 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) [2024-09-17 19:22:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:22:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:16,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-17 19:22:16,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:16,164 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 [2024-09-17 19:22:16,468 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 [2024-09-17 19:22:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:16,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:22:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824758270] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:22:20,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:22:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20 [2024-09-17 19:22:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174897778] [2024-09-17 19:22:20,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:22:20,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-17 19:22:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:22:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-17 19:22:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-09-17 19:22:20,663 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) [2024-09-17 19:22:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:21,121 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-17 19:22:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-17 19:22:21,122 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 [2024-09-17 19:22:21,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:21,123 INFO L225 Difference]: With dead ends: 45 [2024-09-17 19:22:21,123 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:22:21,124 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-09-17 19:22:21,125 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 56 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 19:22:21,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 56 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 19:22:21,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:22:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:22:21,126 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) [2024-09-17 19:22:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:22:21,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2024-09-17 19:22:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:21,127 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:22:21,127 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) [2024-09-17 19:22:21,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:22:21,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:22:21,130 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 19:22:21,147 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-17 19:22:21,331 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 [2024-09-17 19:22:21,334 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-17 19:22:21,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 19:22:22,452 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:22:22,465 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) [2024-09-17 19:22:22,468 INFO L158 Benchmark]: Toolchain (without parser) took 9739.34ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 109.6MB in the beginning and 164.7MB in the end (delta: -55.1MB). Peak memory consumption was 102.8MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,469 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:22:22,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.27ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 97.5MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.64ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 96.6MB in the end (delta: 891.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,469 INFO L158 Benchmark]: Boogie Preprocessor took 42.51ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,470 INFO L158 Benchmark]: RCFGBuilder took 339.40ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 137.6MB in the end (delta: -43.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,470 INFO L158 Benchmark]: TraceAbstraction took 9087.64ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 136.8MB in the beginning and 164.7MB in the end (delta: -27.9MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. [2024-09-17 19:22:22,472 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.27ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 97.5MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.64ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 96.6MB in the end (delta: 891.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.51ms. Allocated memory is still 167.8MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.40ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 137.6MB in the end (delta: -43.1MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * TraceAbstraction took 9087.64ms. Allocated memory was 167.8MB in the beginning and 237.0MB in the end (delta: 69.2MB). Free memory was 136.8MB in the beginning and 164.7MB in the end (delta: -27.9MB). Peak memory consumption was 127.9MB. 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: 7.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 70 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=2, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.8s 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. [2024-09-17 19:22:22,503 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 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 19:22:24,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:22:24,594 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-17 19:22:24,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:22:24,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:22:24,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:22:24,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:22:24,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:22:24,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:22:24,632 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:22:24,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:22:24,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:22:24,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:22:24,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:22:24,634 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:22:24,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:22:24,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:22:24,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:22:24,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:22:24,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:22:24,639 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:22:24,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:22:24,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:22:24,640 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-17 19:22:24,640 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-17 19:22:24,640 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:22:24,640 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-17 19:22:24,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:22:24,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:22:24,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:22:24,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:22:24,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:22:24,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:22:24,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:22:24,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:22:24,643 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:22:24,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:22:24,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:22:24,645 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-17 19:22:24,645 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-17 19:22:24,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:22:24,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:22:24,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:22:24,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:22:24,647 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-17 19:22:24,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 19:22:24,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:22:24,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:22:24,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:22:24,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:22:24,973 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:22:24,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-17 19:22:26,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:22:26,592 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:22:26,593 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c [2024-09-17 19:22:26,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/663029187/c8bd9cda514b4473ab6e35d844a157b3/FLAG530f74112 [2024-09-17 19:22:26,619 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/663029187/c8bd9cda514b4473ab6e35d844a157b3 [2024-09-17 19:22:26,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:22:26,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 19:22:26,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:22:26,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:22:26,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:22:26,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49632bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26, skipping insertion in model container [2024-09-17 19:22:26,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,655 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:22:26,825 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-17 19:22:26,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:22:26,869 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 19:22:26,881 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2024-09-17 19:22:26,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:22:26,911 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:22:26,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26 WrapperNode [2024-09-17 19:22:26,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:22:26,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:22:26,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:22:26,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:22:26,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,941 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 19:22:26,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:22:26,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:22:26,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:22:26,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:22:26,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,955 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,973 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]. [2024-09-17 19:22:26,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:26,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:22:26,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:22:26,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:22:26,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:22:26,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (1/1) ... [2024-09-17 19:22:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:22:27,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:22:27,028 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) [2024-09-17 19:22:27,035 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 [2024-09-17 19:22:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:22:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-17 19:22:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-09-17 19:22:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-17 19:22:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-17 19:22:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 19:22:27,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 19:22:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure check [2024-09-17 19:22:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2024-09-17 19:22:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 19:22:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 19:22:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-09-17 19:22:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-09-17 19:22:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-09-17 19:22:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:22:27,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:22:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-09-17 19:22:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-09-17 19:22:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 19:22:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 19:22:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-17 19:22:27,188 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:22:27,190 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:22:27,420 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-17 19:22:27,422 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:22:27,454 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:22:27,456 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:22:27,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:22:27 BoogieIcfgContainer [2024-09-17 19:22:27,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:22:27,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:22:27,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:22:27,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:22:27,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:22:26" (1/3) ... [2024-09-17 19:22:27,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412857cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:22:27, skipping insertion in model container [2024-09-17 19:22:27,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:22:26" (2/3) ... [2024-09-17 19:22:27,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412857cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:22:27, skipping insertion in model container [2024-09-17 19:22:27,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:22:27" (3/3) ... [2024-09-17 19:22:27,468 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2024-09-17 19:22:27,490 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:22:27,490 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 19:22:27,559 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:22:27,566 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;@303a021d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:22:27,567 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 19:22:27,570 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) [2024-09-17 19:22:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 19:22:27,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:27,580 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] [2024-09-17 19:22:27,580 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:27,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2039448540, now seen corresponding path program 1 times [2024-09-17 19:22:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-17 19:22:27,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853673784] [2024-09-17 19:22:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:27,597 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 [2024-09-17 19:22:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-17 19:22:27,601 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) [2024-09-17 19:22:27,602 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 [2024-09-17 19:22:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:27,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-17 19:22:27,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:27,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:22:27,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-17 19:22:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853673784] [2024-09-17 19:22:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853673784] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:22:27,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:22:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 19:22:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541741839] [2024-09-17 19:22:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:22:27,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 19:22:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-17 19:22:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 19:22:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 19:22:27,745 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) [2024-09-17 19:22:27,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:27,782 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2024-09-17 19:22:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 19:22:27,786 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 [2024-09-17 19:22:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:27,793 INFO L225 Difference]: With dead ends: 72 [2024-09-17 19:22:27,793 INFO L226 Difference]: Without dead ends: 35 [2024-09-17 19:22:27,797 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 [2024-09-17 19:22:27,801 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 [2024-09-17 19:22:27,805 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] [2024-09-17 19:22:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-17 19:22:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-09-17 19:22:27,841 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) [2024-09-17 19:22:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2024-09-17 19:22:27,845 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2024-09-17 19:22:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:27,846 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2024-09-17 19:22:27,846 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) [2024-09-17 19:22:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2024-09-17 19:22:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-17 19:22:27,850 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:27,850 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] [2024-09-17 19:22:27,854 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 [2024-09-17 19:22:28,053 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 [2024-09-17 19:22:28,054 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:28,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:28,054 INFO L85 PathProgramCache]: Analyzing trace with hash 975655078, now seen corresponding path program 1 times [2024-09-17 19:22:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-17 19:22:28,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346089486] [2024-09-17 19:22:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:28,055 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 [2024-09-17 19:22:28,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-17 19:22:28,058 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) [2024-09-17 19:22:28,059 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 [2024-09-17 19:22:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:28,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-17 19:22:28,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:28,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:22:28,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-17 19:22:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346089486] [2024-09-17 19:22:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346089486] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:22:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:22:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-17 19:22:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328508947] [2024-09-17 19:22:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:22:28,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 19:22:28,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-17 19:22:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 19:22:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-17 19:22:28,548 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) [2024-09-17 19:22:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:28,868 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-09-17 19:22:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 19:22:28,869 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 [2024-09-17 19:22:28,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:28,871 INFO L225 Difference]: With dead ends: 54 [2024-09-17 19:22:28,871 INFO L226 Difference]: Without dead ends: 49 [2024-09-17 19:22:28,872 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-17 19:22:28,874 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 [2024-09-17 19:22:28,876 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] [2024-09-17 19:22:28,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-17 19:22:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-09-17 19:22:28,891 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) [2024-09-17 19:22:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-09-17 19:22:28,896 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2024-09-17 19:22:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:28,896 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-09-17 19:22:28,896 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) [2024-09-17 19:22:28,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:28,897 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-09-17 19:22:28,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-17 19:22:28,898 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:28,898 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] [2024-09-17 19:22:28,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-09-17 19:22:29,101 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 [2024-09-17 19:22:29,102 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:29,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash -599674086, now seen corresponding path program 1 times [2024-09-17 19:22:29,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-17 19:22:29,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905319305] [2024-09-17 19:22:29,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:29,103 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 [2024-09-17 19:22:29,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-17 19:22:29,106 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) [2024-09-17 19:22:29,120 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 [2024-09-17 19:22:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:29,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-17 19:22:29,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:29,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:22:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:30,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-17 19:22:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905319305] [2024-09-17 19:22:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905319305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:22:30,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:22:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2024-09-17 19:22:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114008165] [2024-09-17 19:22:30,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:22:30,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-17 19:22:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-17 19:22:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-17 19:22:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-09-17 19:22:30,077 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) [2024-09-17 19:22:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:22:31,400 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2024-09-17 19:22:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 19:22:31,401 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 [2024-09-17 19:22:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:22:31,404 INFO L225 Difference]: With dead ends: 108 [2024-09-17 19:22:31,405 INFO L226 Difference]: Without dead ends: 106 [2024-09-17 19:22:31,405 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-09-17 19:22:31,406 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 60 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-17 19:22:31,407 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 523 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-17 19:22:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-09-17 19:22:31,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 82. [2024-09-17 19:22:31,440 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) [2024-09-17 19:22:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions. [2024-09-17 19:22:31,443 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 32 [2024-09-17 19:22:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:22:31,443 INFO L474 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions. [2024-09-17 19:22:31,443 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) [2024-09-17 19:22:31,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions. [2024-09-17 19:22:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-17 19:22:31,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:22:31,446 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] [2024-09-17 19:22:31,450 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 [2024-09-17 19:22:31,646 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 [2024-09-17 19:22:31,647 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:22:31,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:22:31,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1182090583, now seen corresponding path program 1 times [2024-09-17 19:22:31,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-17 19:22:31,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640568908] [2024-09-17 19:22:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:31,648 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 [2024-09-17 19:22:31,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-17 19:22:31,650 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) [2024-09-17 19:22:31,651 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 [2024-09-17 19:22:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:31,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-17 19:22:31,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:37,497 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-17 19:22:37,498 INFO L173 IndexEqualityManager]: detected equality via solver [2024-09-17 19:22:37,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-09-17 19:22:37,703 INFO L349 Elim1Store]: treesize reduction 96, result has 47.3 percent of original size [2024-09-17 19:22:37,704 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 [2024-09-17 19:22:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:22:37,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:22:38,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-17 19:22:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640568908] [2024-09-17 19:22:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640568908] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:22:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [975605251] [2024-09-17 19:22:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:22:38,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-17 19:22:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-17 19:22:38,262 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) [2024-09-17 19:22:38,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-09-17 19:22:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:22:38,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-17 19:22:38,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:22:38,382 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 [2024-09-17 19:23:15,172 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 [2024-09-17 19:23:22,007 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 [2024-09-17 19:23:29,313 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 [2024-09-17 19:23:31,025 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 [2024-09-17 19:23:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-09-17 19:23:31,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:24:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [975605251] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:24:03,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 19:24:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 33 [2024-09-17 19:24:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628408977] [2024-09-17 19:24:03,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 19:24:03,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-17 19:24:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-17 19:24:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-17 19:24:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1077, Unknown=18, NotChecked=204, Total=1406 [2024-09-17 19:24:03,493 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) [2024-09-17 19:24:07,654 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] [2024-09-17 19:24:11,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-17 19:24:15,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-17 19:24:19,868 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] [2024-09-17 19:26:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:26:41,643 INFO L93 Difference]: Finished difference Result 145 states and 177 transitions. [2024-09-17 19:26:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-17 19:26:41,645 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 [2024-09-17 19:26:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:26:41,646 INFO L225 Difference]: With dead ends: 145 [2024-09-17 19:26:41,646 INFO L226 Difference]: Without dead ends: 56 [2024-09-17 19:26:41,649 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 229.9s TimeCoverageRelationStatistics Valid=356, Invalid=2701, Unknown=35, NotChecked=330, Total=3422 [2024-09-17 19:26:41,649 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 43 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2024-09-17 19:26:41,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 427 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 563 Invalid, 4 Unknown, 179 Unchecked, 18.6s Time] [2024-09-17 19:26:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-17 19:26:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2024-09-17 19:26:41,664 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) [2024-09-17 19:26:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-09-17 19:26:41,665 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 41 [2024-09-17 19:26:41,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:26:41,665 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-09-17 19:26:41,665 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) [2024-09-17 19:26:41,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:26:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-09-17 19:26:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-17 19:26:41,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:26:41,667 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] [2024-09-17 19:26:41,672 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 [2024-09-17 19:26:41,872 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-09-17 19:26:42,069 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 [2024-09-17 19:26:42,069 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 19:26:42,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:26:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -837710144, now seen corresponding path program 1 times [2024-09-17 19:26:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-17 19:26:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076130683] [2024-09-17 19:26:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:26:42,071 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 [2024-09-17 19:26:42,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-17 19:26:42,073 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) [2024-09-17 19:26:42,073 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 [2024-09-17 19:26:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:26:42,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-17 19:26:42,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:26:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-17 19:26:44,084 INFO L327 TraceCheckSpWp]: Computing backward predicates...