./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/eq2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/eq2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/loop-invariants/eq2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/eq2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:11:40,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:11:40,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:11:40,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:11:40,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:11:40,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:11:40,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:11:40,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:11:40,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:11:40,452 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:11:40,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:11:40,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:11:40,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:11:40,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:11:40,454 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:11:40,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:11:40,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:11:40,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:11:40,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:11:40,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:11:40,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:11:40,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:11:40,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:11:40,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:11:40,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:11:40,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:11:40,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:11:40,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:11:40,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:11:40,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:11:40,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:11:40,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:11:40,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:11:40,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:11:40,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:11:40,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:11:40,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:11:40,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:11:40,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:11:40,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:11:40,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:11:40,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:11:40,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:11:40,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:11:40,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:11:40,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:11:40,740 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:11:40,740 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:11:40,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invariants/eq2.c [2024-09-15 20:11:42,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:11:42,439 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:11:42,439 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invariants/eq2.c [2024-09-15 20:11:42,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/94d94d684/5aef049be21745af97c75e424d1d0d8f/FLAGfe386b519 [2024-09-15 20:11:42,849 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/94d94d684/5aef049be21745af97c75e424d1d0d8f [2024-09-15 20:11:42,852 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:11:42,853 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:11:42,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/eq2.yml/witness-2.1.yml [2024-09-15 20:11:42,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:11:42,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:11:42,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:11:42,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:11:42,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:11:42,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:11:42" (1/2) ... [2024-09-15 20:11:42,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e457cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:42, skipping insertion in model container [2024-09-15 20:11:42,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:11:42" (1/2) ... [2024-09-15 20:11:42,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46cdd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:11:42, skipping insertion in model container [2024-09-15 20:11:42,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:42" (2/2) ... [2024-09-15 20:11:42,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e457cc and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:42, skipping insertion in model container [2024-09-15 20:11:42,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:42" (2/2) ... [2024-09-15 20:11:42,941 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:11:42,944 INFO L1541 ArrayList]: Loop invariant at [L23-L26] ((z <= y) && (z == y)) [2024-09-15 20:11:42,944 INFO L1541 ArrayList]: Function contract at [L12]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-15 20:11:42,958 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:11:43,077 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/loop-invariants/eq2.c[593,606] [2024-09-15 20:11:43,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:11:43,098 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:11:43,125 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/loop-invariants/eq2.c[593,606] Start Parsing Local [2024-09-15 20:11:43,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:11:43,140 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:11:43,140 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43 WrapperNode [2024-09-15 20:11:43,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:11:43,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:11:43,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:11:43,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:11:43,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,164 INFO L138 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-09-15 20:11:43,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:11:43,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:11:43,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:11:43,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:11:43,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,184 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 0 writes are split as follows [0, 0]. [2024-09-15 20:11:43,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:11:43,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:11:43,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:11:43,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:11:43,196 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (1/1) ... [2024-09-15 20:11:43,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:11:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:11:43,228 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) [2024-09-15 20:11:43,230 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 [2024-09-15 20:11:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:11:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:11:43,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:11:43,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:11:43,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 20:11:43,319 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:11:43,320 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:11:43,415 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-15 20:11:43,415 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:11:43,443 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:11:43,443 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:11:43,443 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:11:43 BoogieIcfgContainer [2024-09-15 20:11:43,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:11:43,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:11:43,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:11:43,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:11:43,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:11:42" (1/4) ... [2024-09-15 20:11:43,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477c9dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:11:43, skipping insertion in model container [2024-09-15 20:11:43,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:11:42" (2/4) ... [2024-09-15 20:11:43,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477c9dda and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:11:43, skipping insertion in model container [2024-09-15 20:11:43,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:11:43" (3/4) ... [2024-09-15 20:11:43,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477c9dda and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:11:43, skipping insertion in model container [2024-09-15 20:11:43,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:11:43" (4/4) ... [2024-09-15 20:11:43,451 INFO L112 eAbstractionObserver]: Analyzing ICFG eq2.c [2024-09-15 20:11:43,463 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:11:43,464 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-15 20:11:43,501 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:11:43,508 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=None, 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;@31c6b0ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:11:43,509 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-15 20:11:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-09-15 20:11:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-15 20:11:43,518 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:43,518 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-15 20:11:43,519 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:43,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2112, now seen corresponding path program 1 times [2024-09-15 20:11:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449489604] [2024-09-15 20:11:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:43,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449489604] [2024-09-15 20:11:43,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449489604] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:43,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:11:43,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734296853] [2024-09-15 20:11:43,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:43,808 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:11:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:11:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:43,836 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-15 20:11:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:43,857 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-09-15 20:11:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:11:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2024-09-15 20:11:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:43,864 INFO L225 Difference]: With dead ends: 13 [2024-09-15 20:11:43,865 INFO L226 Difference]: Without dead ends: 12 [2024-09-15 20:11:43,881 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:43,883 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:43,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-09-15 20:11:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-09-15 20:11:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-09-15 20:11:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-09-15 20:11:43,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 2 [2024-09-15 20:11:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:43,910 INFO L474 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-09-15 20:11:43,910 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-15 20:11:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-09-15 20:11:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-15 20:11:43,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:43,911 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-15 20:11:43,912 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:11:43,912 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:43,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:43,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1951680101, now seen corresponding path program 1 times [2024-09-15 20:11:43,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:43,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478814730] [2024-09-15 20:11:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:43,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478814730] [2024-09-15 20:11:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478814730] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:44,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:44,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:11:44,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144674459] [2024-09-15 20:11:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:44,069 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:11:44,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:11:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:11:44,070 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-09-15 20:11:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:44,087 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2024-09-15 20:11:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:11:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2024-09-15 20:11:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:44,089 INFO L225 Difference]: With dead ends: 10 [2024-09-15 20:11:44,089 INFO L226 Difference]: Without dead ends: 9 [2024-09-15 20:11:44,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:11:44,090 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:44,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-09-15 20:11:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-09-15 20:11:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-09-15 20:11:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-09-15 20:11:44,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2024-09-15 20:11:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:44,092 INFO L474 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-09-15 20:11:44,092 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-09-15 20:11:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-09-15 20:11:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-15 20:11:44,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:11:44,093 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:11:44,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:11:44,093 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:11:44,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:11:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1336129592, now seen corresponding path program 1 times [2024-09-15 20:11:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:11:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886353119] [2024-09-15 20:11:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:11:44,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:11:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:11:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:11:44,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:11:44,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886353119] [2024-09-15 20:11:44,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886353119] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:11:44,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:11:44,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:11:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031073797] [2024-09-15 20:11:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:11:44,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:11:44,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:11:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:11:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:44,139 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-15 20:11:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:11:44,146 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2024-09-15 20:11:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:11:44,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2024-09-15 20:11:44,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:11:44,146 INFO L225 Difference]: With dead ends: 7 [2024-09-15 20:11:44,146 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:11:44,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:11:44,147 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:11:44,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:11:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:11:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:11:44,148 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) [2024-09-15 20:11:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:11:44,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2024-09-15 20:11:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:11:44,149 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:11:44,149 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-09-15 20:11:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:11:44,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:11:44,155 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-15 20:11:44,155 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-15 20:11:44,156 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-15 20:11:44,156 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-15 20:11:44,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:11:44,160 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-15 20:11:44,163 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:11:44,165 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:11:44,167 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:11:44,167 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:11:44 BoogieIcfgContainer [2024-09-15 20:11:44,168 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:11:44,168 INFO L158 Benchmark]: Toolchain (without parser) took 1246.83ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 64.7MB in the beginning and 64.2MB in the end (delta: 460.2kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,168 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 27.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:11:44,169 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 86.0MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:11:44,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.62ms. Allocated memory is still 86.0MB. Free memory was 64.7MB in the beginning and 51.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.28ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,170 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 86.0MB. Free memory was 50.1MB in the beginning and 48.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,170 INFO L158 Benchmark]: RCFGBuilder took 248.64ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 48.4MB in the beginning and 83.6MB in the end (delta: -35.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,170 INFO L158 Benchmark]: TraceAbstraction took 722.46ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 64.2MB in the end (delta: 18.6MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-09-15 20:11:44,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory is still 27.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 86.0MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.62ms. Allocated memory is still 86.0MB. Free memory was 64.7MB in the beginning and 51.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.28ms. Allocated memory is still 86.0MB. Free memory was 51.5MB in the beginning and 50.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 86.0MB. Free memory was 50.1MB in the beginning and 48.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.64ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 48.4MB in the beginning and 83.6MB in the end (delta: -35.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 722.46ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 64.2MB in the end (delta: 18.6MB). Peak memory consumption was 17.5MB. 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: 23]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 12]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 12]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 19 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:11:44,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE