./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.yml/witness-2.1.yml --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/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/sum_20x0-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.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-de32597-m [2024-09-17 19:53:04,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:53:04,538 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:53:04,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:53:04,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:53:04,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:53:04,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:53:04,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:53:04,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:53:04,576 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:53:04,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:53:04,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:53:04,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:53:04,578 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:53:04,580 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:53:04,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:53:04,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:53:04,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:53:04,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:53:04,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:53:04,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:53:04,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:53:04,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:53:04,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:53:04,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:53:04,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:53:04,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:53:04,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:53:04,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:53:04,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:53:04,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:53:04,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:53:04,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:04,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:53:04,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:53:04,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:53:04,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:53:04,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:53:04,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:53:04,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:53:04,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:53:04,592 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:53:04,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:53:04,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:53:04,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:53:04,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:53:04,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:53:04,857 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:53:04,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-17 19:53:06,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:53:06,518 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:53:06,519 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-17 19:53:06,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/5eba7cc88/4b443baf38194abd892c5a80221134af/FLAGc19533f08 [2024-09-17 19:53:06,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/5eba7cc88/4b443baf38194abd892c5a80221134af [2024-09-17 19:53:06,539 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:53:06,540 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:53:06,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.yml/witness-2.1.yml [2024-09-17 19:53:06,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:53:06,592 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:53:06,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:06,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:53:06,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:53:06,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:06" (1/2) ... [2024-09-17 19:53:06,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7d390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:06, skipping insertion in model container [2024-09-17 19:53:06,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:06" (1/2) ... [2024-09-17 19:53:06,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4878cc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:06, skipping insertion in model container [2024-09-17 19:53:06,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:06" (2/2) ... [2024-09-17 19:53:06,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7d390 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:06, skipping insertion in model container [2024-09-17 19:53:06,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:06" (2/2) ... [2024-09-17 19:53:06,612 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:53:06,615 INFO L1541 ArrayList]: Function contract at [L5]: requires null, ensures (\result == ((long long) \old(n) + \old(m))) [2024-09-17 19:53:06,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:53:06,778 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/recursive-simple/sum_20x0-2.c[481,494] [2024-09-17 19:53:06,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:06,797 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-17 19:53:06,831 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/recursive-simple/sum_20x0-2.c[481,494] [2024-09-17 19:53:06,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:06,845 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:53:06,846 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:06 WrapperNode [2024-09-17 19:53:06,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:06,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:06,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:53:06,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:53:06,856 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,863 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,880 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-09-17 19:53:06,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:06,881 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:53:06,881 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:53:06,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:53:06,892 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,892 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,893 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,901 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-17 19:53:06,902 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,902 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,910 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,911 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,912 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,916 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:53:06,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:53:06,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:53:06,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:53:06,920 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 17.09 07:53:06" (1/1) ... [2024-09-17 19:53:06,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:06,955 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 19:53:06,958 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 19:53:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:53:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:53:07,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:53:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-17 19:53:07,010 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-17 19:53:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-17 19:53:07,075 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:53:07,077 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:53:07,166 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-17 19:53:07,166 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:53:07,191 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:53:07,192 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:53:07,192 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:07 BoogieIcfgContainer [2024-09-17 19:53:07,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:53:07,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:53:07,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:53:07,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:53:07,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:53:06" (1/4) ... [2024-09-17 19:53:07,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd05bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:53:07, skipping insertion in model container [2024-09-17 19:53:07,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:06" (2/4) ... [2024-09-17 19:53:07,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd05bf and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:07, skipping insertion in model container [2024-09-17 19:53:07,200 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 17.09 07:53:06" (3/4) ... [2024-09-17 19:53:07,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd05bf and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:07, skipping insertion in model container [2024-09-17 19:53:07,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:07" (4/4) ... [2024-09-17 19:53:07,202 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2024-09-17 19:53:07,220 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:53:07,220 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-17 19:53:07,259 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:53:07,264 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;@50d8db70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:53:07,265 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-17 19:53:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:07,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-17 19:53:07,276 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:07,277 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-17 19:53:07,278 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:07,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-17 19:53:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:07,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761897528] [2024-09-17 19:53:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:07,571 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 19:53:07,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761897528] [2024-09-17 19:53:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761897528] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:07,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:07,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-17 19:53:07,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655549975] [2024-09-17 19:53:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:07,580 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:53:07,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:53:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:53:07,621 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:07,732 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-17 19:53:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:53:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-17 19:53:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:07,739 INFO L225 Difference]: With dead ends: 22 [2024-09-17 19:53:07,739 INFO L226 Difference]: Without dead ends: 20 [2024-09-17 19:53:07,740 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:53:07,743 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:07,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-17 19:53:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-17 19:53:07,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-17 19:53:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-17 19:53:07,780 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-17 19:53:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:07,780 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-17 19:53:07,781 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-17 19:53:07,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-17 19:53:07,783 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:07,783 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:07,783 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:53:07,784 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:07,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:07,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-17 19:53:07,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:07,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110398505] [2024-09-17 19:53:07,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:07,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110398505] [2024-09-17 19:53:07,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110398505] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:07,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748166315] [2024-09-17 19:53:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:07,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:07,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:07,959 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 19:53:07,962 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 19:53:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:08,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-17 19:53:08,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:08,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:08,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:08,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748166315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:08,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-17 19:53:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742298950] [2024-09-17 19:53:08,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:08,205 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-17 19:53:08,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-17 19:53:08,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-17 19:53:08,210 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:08,409 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-17 19:53:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 19:53:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-17 19:53:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:08,413 INFO L225 Difference]: With dead ends: 44 [2024-09-17 19:53:08,414 INFO L226 Difference]: Without dead ends: 44 [2024-09-17 19:53:08,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:53:08,415 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:08,416 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-17 19:53:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-17 19:53:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:53:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-17 19:53:08,425 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-17 19:53:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:08,425 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-17 19:53:08,426 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-17 19:53:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-17 19:53:08,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:08,427 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-17 19:53:08,446 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 19:53:08,631 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:08,632 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:08,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-17 19:53:08,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:08,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195232901] [2024-09-17 19:53:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:08,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:08,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195232901] [2024-09-17 19:53:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195232901] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651709910] [2024-09-17 19:53:08,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:53:08,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:08,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:08,921 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 19:53:08,924 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 19:53:08,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-17 19:53:08,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:08,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 19:53:08,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-17 19:53:09,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:53:09,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651709910] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:09,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:53:09,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-17 19:53:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441140028] [2024-09-17 19:53:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:09,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:53:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:53:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-17 19:53:09,013 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:09,061 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-17 19:53:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:53:09,061 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-17 19:53:09,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:09,063 INFO L225 Difference]: With dead ends: 39 [2024-09-17 19:53:09,063 INFO L226 Difference]: Without dead ends: 39 [2024-09-17 19:53:09,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-17 19:53:09,064 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:09,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:53:09,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-17 19:53:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-17 19:53:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-17 19:53:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-17 19:53:09,071 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-17 19:53:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:09,071 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-17 19:53:09,071 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-17 19:53:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-17 19:53:09,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:09,072 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:09,085 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 19:53:09,272 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:09,273 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:09,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-17 19:53:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662614588] [2024-09-17 19:53:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:09,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-17 19:53:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:09,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:09,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662614588] [2024-09-17 19:53:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662614588] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:09,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955431390] [2024-09-17 19:53:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:09,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:09,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 19:53:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:09,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-17 19:53:09,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:09,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:09,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955431390] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:09,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:09,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-09-17 19:53:09,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244438375] [2024-09-17 19:53:09,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:09,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-17 19:53:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-17 19:53:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-09-17 19:53:09,827 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:10,251 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-17 19:53:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-17 19:53:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-17 19:53:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:10,256 INFO L225 Difference]: With dead ends: 71 [2024-09-17 19:53:10,256 INFO L226 Difference]: Without dead ends: 71 [2024-09-17 19:53:10,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2024-09-17 19:53:10,258 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:10,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:53:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-17 19:53:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-17 19:53:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-17 19:53:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-17 19:53:10,267 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-17 19:53:10,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:10,268 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-17 19:53:10,268 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-17 19:53:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-17 19:53:10,269 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:10,269 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:10,281 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-17 19:53:10,472 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:10,472 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times [2024-09-17 19:53:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584010698] [2024-09-17 19:53:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:10,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-17 19:53:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584010698] [2024-09-17 19:53:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584010698] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637033538] [2024-09-17 19:53:10,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 19:53:10,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:10,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:10,888 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 19:53:10,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 19:53:10,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:10,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-17 19:53:10,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:11,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:11,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637033538] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:11,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:11,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45 [2024-09-17 19:53:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895143005] [2024-09-17 19:53:11,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:11,604 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-17 19:53:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-17 19:53:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2024-09-17 19:53:11,610 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:12,522 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-09-17 19:53:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-17 19:53:12,523 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-17 19:53:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:12,526 INFO L225 Difference]: With dead ends: 141 [2024-09-17 19:53:12,526 INFO L226 Difference]: Without dead ends: 141 [2024-09-17 19:53:12,528 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2024-09-17 19:53:12,528 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:12,529 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 190 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-17 19:53:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-17 19:53:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2024-09-17 19:53:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 83 states have internal predecessors, (101), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-17 19:53:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2024-09-17 19:53:12,546 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 35 [2024-09-17 19:53:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:12,546 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2024-09-17 19:53:12,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2024-09-17 19:53:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-17 19:53:12,551 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:12,551 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:12,570 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-17 19:53:12,755 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:12,756 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:12,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1369371833, now seen corresponding path program 3 times [2024-09-17 19:53:12,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:12,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097065123] [2024-09-17 19:53:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:12,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:13,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-17 19:53:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 552 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097065123] [2024-09-17 19:53:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097065123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002458000] [2024-09-17 19:53:14,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 19:53:14,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:14,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:14,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:14,013 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 19:53:14,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-17 19:53:14,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 19:53:14,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-17 19:53:14,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-09-17 19:53:14,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 19:53:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002458000] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-17 19:53:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [45] total 46 [2024-09-17 19:53:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122368948] [2024-09-17 19:53:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:14,120 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:53:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:53:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2024-09-17 19:53:14,122 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 19:53:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:14,166 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-09-17 19:53:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 19:53:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-09-17 19:53:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:14,168 INFO L225 Difference]: With dead ends: 122 [2024-09-17 19:53:14,168 INFO L226 Difference]: Without dead ends: 122 [2024-09-17 19:53:14,169 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-09-17 19:53:14,171 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:14,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:53:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-17 19:53:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-09-17 19:53:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 82 states have internal predecessors, (82), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-17 19:53:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2024-09-17 19:53:14,181 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 68 [2024-09-17 19:53:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:14,182 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2024-09-17 19:53:14,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 19:53:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2024-09-17 19:53:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-17 19:53:14,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:14,184 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:14,197 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 19:53:14,387 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-17 19:53:14,387 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:14,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:14,388 INFO L85 PathProgramCache]: Analyzing trace with hash -949632177, now seen corresponding path program 1 times [2024-09-17 19:53:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389985827] [2024-09-17 19:53:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:14,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:16,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:16,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:16,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:16,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:16,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-09-17 19:53:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:17,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389985827] [2024-09-17 19:53:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389985827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:17,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791964313] [2024-09-17 19:53:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:17,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:17,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:17,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 19:53:17,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 19:53:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:17,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-17 19:53:17,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-17 19:53:18,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-17 19:53:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791964313] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:48,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 43] total 47 [2024-09-17 19:53:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279653136] [2024-09-17 19:53:48,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:48,709 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-17 19:53:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-17 19:53:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2024-09-17 19:53:48,716 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-17 19:53:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:49,156 INFO L93 Difference]: Finished difference Result 692 states and 711 transitions. [2024-09-17 19:53:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-17 19:53:49,157 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) Word has length 123 [2024-09-17 19:53:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:49,166 INFO L225 Difference]: With dead ends: 692 [2024-09-17 19:53:49,166 INFO L226 Difference]: Without dead ends: 638 [2024-09-17 19:53:49,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 241 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1455, Invalid=3101, Unknown=0, NotChecked=0, Total=4556 [2024-09-17 19:53:49,168 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 371 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:49,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 78 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 19:53:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-09-17 19:53:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 125. [2024-09-17 19:53:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 84 states have internal predecessors, (84), 20 states have call successors, (20), 19 states have call predecessors, (20), 21 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-09-17 19:53:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2024-09-17 19:53:49,221 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123 [2024-09-17 19:53:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:49,225 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2024-09-17 19:53:49,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-17 19:53:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2024-09-17 19:53:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-17 19:53:49,227 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:49,227 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:49,242 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-17 19:53:49,431 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:49,432 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:49,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1487103875, now seen corresponding path program 2 times [2024-09-17 19:53:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:49,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313887447] [2024-09-17 19:53:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:49,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-17 19:53:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:50,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313887447] [2024-09-17 19:53:50,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313887447] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:50,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 19:53:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879637391] [2024-09-17 19:53:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:50,002 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 19:53:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 19:53:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:53:50,003 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:53:50,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:50,018 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2024-09-17 19:53:50,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 19:53:50,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2024-09-17 19:53:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:50,020 INFO L225 Difference]: With dead ends: 123 [2024-09-17 19:53:50,020 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 19:53:50,020 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 19:53:50,020 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:50,021 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 19:53:50,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 19:53:50,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 19:53:50,021 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 19:53:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 19:53:50,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2024-09-17 19:53:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:50,022 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 19:53:50,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-17 19:53:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 19:53:50,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 19:53:50,024 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-17 19:53:50,025 INFO L785 garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-17 19:53:50,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-17 19:53:50,028 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1] [2024-09-17 19:53:50,029 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 19:53:50,032 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 07:53:50 BoogieIcfgContainer [2024-09-17 19:53:50,032 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 19:53:50,033 INFO L158 Benchmark]: Toolchain (without parser) took 43440.85ms. Allocated memory was 153.1MB in the beginning and 358.6MB in the end (delta: 205.5MB). Free memory was 95.1MB in the beginning and 159.6MB in the end (delta: -64.5MB). Peak memory consumption was 143.4MB. Max. memory is 16.1GB. [2024-09-17 19:53:50,033 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:53:50,033 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:53:50,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.38ms. Allocated memory is still 153.1MB. Free memory was 95.1MB in the beginning and 81.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 19:53:50,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.98ms. Allocated memory is still 153.1MB. Free memory was 81.8MB in the beginning and 80.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 19:53:50,034 INFO L158 Benchmark]: Boogie Preprocessor took 36.87ms. Allocated memory is still 153.1MB. Free memory was 80.4MB in the beginning and 78.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-17 19:53:50,034 INFO L158 Benchmark]: RCFGBuilder took 273.37ms. Allocated memory is still 153.1MB. Free memory was 78.8MB in the beginning and 68.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-17 19:53:50,034 INFO L158 Benchmark]: TraceAbstraction took 42837.89ms. Allocated memory was 153.1MB in the beginning and 358.6MB in the end (delta: 205.5MB). Free memory was 67.5MB in the beginning and 159.6MB in the end (delta: -92.1MB). Peak memory consumption was 116.1MB. Max. memory is 16.1GB. [2024-09-17 19:53:50,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 153.1MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.38ms. Allocated memory is still 153.1MB. Free memory was 95.1MB in the beginning and 81.8MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.98ms. Allocated memory is still 153.1MB. Free memory was 81.8MB in the beginning and 80.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.87ms. Allocated memory is still 153.1MB. Free memory was 80.4MB in the beginning and 78.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 273.37ms. Allocated memory is still 153.1MB. Free memory was 78.8MB in the beginning and 68.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 42837.89ms. Allocated memory was 153.1MB in the beginning and 358.6MB in the end (delta: 205.5MB). Free memory was 67.5MB in the beginning and 159.6MB in the end (delta: -92.1MB). Peak memory consumption was 116.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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: 5]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 42.8s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 815 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 83 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 456 SyntacticMatches, 23 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=7, InterpolantAutomatonStates: 119, 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, 8 MinimizatonAttempts, 548 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.2s InterpolantComputationTime, 676 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 2162 SizeOfPredicates, 36 NumberOfNonLiveVariables, 804 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 3688/6268 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-17 19:53:50,073 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