./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat1-ll.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/fermat1-ll.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:19:48,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:19:48,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:19:48,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:19:48,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:19:48,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:19:48,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:19:48,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:19:48,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:19:48,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:19:48,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:19:48,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:19:48,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:19:48,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:19:48,555 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:19:48,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:19:48,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:19:48,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:19:48,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:19:48,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:19:48,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:19:48,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:19:48,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:19:48,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:19:48,571 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:19:48,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:19:48,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:19:48,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:19:48,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:19:48,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:19:48,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:19:48,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:19:48,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:19:48,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:19:48,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:19:48,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:19:48,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:19:48,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:19:48,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:19:48,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:19:48,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:19:48,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:19:48,576 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:19:48,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:19:48,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:19:48,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:19:48,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:19:48,855 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:19:48,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2024-09-24 23:19:50,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:19:50,480 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:19:50,480 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2024-09-24 23:19:50,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e27ace105/47e397689ec447e7983af42e8276586a/FLAGcf4873a7e [2024-09-24 23:19:50,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e27ace105/47e397689ec447e7983af42e8276586a [2024-09-24 23:19:50,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:19:50,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:19:50,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:19:50,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:19:50,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:19:50,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349da1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50, skipping insertion in model container [2024-09-24 23:19:50,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:19:50,695 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/nla-digbench/fermat1-ll.c[535,548] [2024-09-24 23:19:50,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:19:50,733 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:19:50,744 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/nla-digbench/fermat1-ll.c[535,548] [2024-09-24 23:19:50,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:19:50,772 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:19:50,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50 WrapperNode [2024-09-24 23:19:50,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:19:50,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:19:50,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:19:50,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:19:50,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,794 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:19:50,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:19:50,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:19:50,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:19:50,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:19:50,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,828 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:19:50,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:19:50,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:19:50,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:19:50,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:19:50,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (1/1) ... [2024-09-24 23:19:50,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:19:50,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:50,889 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) [2024-09-24 23:19:50,896 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 [2024-09-24 23:19:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:19:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-24 23:19:50,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-24 23:19:50,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:19:50,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:19:50,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:19:50,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:19:50,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:19:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:19:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:19:50,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:19:50,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:19:51,005 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:19:51,008 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:19:51,167 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-24 23:19:51,171 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:19:51,190 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:19:51,191 INFO L317 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-24 23:19:51,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:19:51 BoogieIcfgContainer [2024-09-24 23:19:51,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:19:51,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:19:51,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:19:51,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:19:51,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:19:50" (1/3) ... [2024-09-24 23:19:51,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d42c5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:19:51, skipping insertion in model container [2024-09-24 23:19:51,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:19:50" (2/3) ... [2024-09-24 23:19:51,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d42c5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:19:51, skipping insertion in model container [2024-09-24 23:19:51,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:19:51" (3/3) ... [2024-09-24 23:19:51,204 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2024-09-24 23:19:51,220 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:19:51,220 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:19:51,278 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:19:51,285 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@93da8ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:19:51,286 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:19:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:19:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-24 23:19:51,298 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:51,299 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:51,300 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:51,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1341999292, now seen corresponding path program 1 times [2024-09-24 23:19:51,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:51,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672979104] [2024-09-24 23:19:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:51,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:51,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:51,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:51,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-24 23:19:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:19:51,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672979104] [2024-09-24 23:19:51,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672979104] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:51,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:19:51,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:19:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996576065] [2024-09-24 23:19:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:51,515 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:19:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:19:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:19:51,537 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:19:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:51,567 INFO L93 Difference]: Finished difference Result 58 states and 91 transitions. [2024-09-24 23:19:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:19:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-09-24 23:19:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:51,578 INFO L225 Difference]: With dead ends: 58 [2024-09-24 23:19:51,578 INFO L226 Difference]: Without dead ends: 28 [2024-09-24 23:19:51,581 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:19:51,585 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:51,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:19:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-24 23:19:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-24 23:19:51,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-24 23:19:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-09-24 23:19:51,623 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 21 [2024-09-24 23:19:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:51,624 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-09-24 23:19:51,624 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:19:51,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-09-24 23:19:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-24 23:19:51,626 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:51,626 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:51,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:19:51,627 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:51,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 971050263, now seen corresponding path program 1 times [2024-09-24 23:19:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:51,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254389367] [2024-09-24 23:19:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-24 23:19:51,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909873404] [2024-09-24 23:19:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:51,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:51,681 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) [2024-09-24 23:19:51,682 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:19:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:51,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-24 23:19:51,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:19:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:19:52,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-24 23:19:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254389367] [2024-09-24 23:19:52,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-24 23:19:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909873404] [2024-09-24 23:19:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909873404] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:19:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:19:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:19:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531436703] [2024-09-24 23:19:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:19:52,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:19:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:19:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:19:52,045 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-24 23:19:53,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-24 23:19:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:53,814 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2024-09-24 23:19:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:19:53,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2024-09-24 23:19:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:53,831 INFO L225 Difference]: With dead ends: 43 [2024-09-24 23:19:53,831 INFO L226 Difference]: Without dead ends: 41 [2024-09-24 23:19:53,831 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:19:53,832 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:53,838 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-09-24 23:19:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-24 23:19:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-24 23:19:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-24 23:19:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-09-24 23:19:53,854 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2024-09-24 23:19:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:53,854 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-09-24 23:19:53,854 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-09-24 23:19:53,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-09-24 23:19:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-24 23:19:53,858 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:19:53,858 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:19:53,873 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:19:54,058 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 [2024-09-24 23:19:54,059 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:19:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1355764800, now seen corresponding path program 1 times [2024-09-24 23:19:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:19:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244721459] [2024-09-24 23:19:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:19:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:19:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-24 23:19:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-24 23:19:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-24 23:19:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:19:54,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:19:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244721459] [2024-09-24 23:19:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244721459] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:19:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55348733] [2024-09-24 23:19:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:19:54,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:19:54,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:19:54,498 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) [2024-09-24 23:19:54,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:19:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:19:54,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:19:54,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:19:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:19:54,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:19:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:19:54,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55348733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:19:54,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:19:54,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2024-09-24 23:19:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805277689] [2024-09-24 23:19:54,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:19:54,772 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-24 23:19:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:19:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-24 23:19:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-09-24 23:19:54,773 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-24 23:19:54,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:19:54,921 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-09-24 23:19:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:19:54,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 27 [2024-09-24 23:19:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:19:54,923 INFO L225 Difference]: With dead ends: 41 [2024-09-24 23:19:54,923 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:19:54,925 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-09-24 23:19:54,927 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:19:54,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 139 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:19:54,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:19:54,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:19:54,931 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) [2024-09-24 23:19:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:19:54,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2024-09-24 23:19:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:19:54,932 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:19:54,932 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2024-09-24 23:19:54,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:19:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:19:54,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:19:54,935 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:19:54,953 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-24 23:19:55,139 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 [2024-09-24 23:19:55,143 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-09-24 23:19:55,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:19:55,340 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:19:55,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:19:55 BoogieIcfgContainer [2024-09-24 23:19:55,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:19:55,363 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:19:55,364 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:19:55,364 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:19:55,364 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:19:51" (3/4) ... [2024-09-24 23:19:55,367 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:19:55,418 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:19:55,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:19:55,420 INFO L158 Benchmark]: Toolchain (without parser) took 4910.38ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 55.5MB in the end (delta: 72.5MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,420 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:19:55,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.38ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 116.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.17ms. Allocated memory is still 176.2MB. Free memory was 116.2MB in the beginning and 115.4MB in the end (delta: 746.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:19:55,421 INFO L158 Benchmark]: Boogie Preprocessor took 51.29ms. Allocated memory is still 176.2MB. Free memory was 115.4MB in the beginning and 113.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,421 INFO L158 Benchmark]: RCFGBuilder took 340.16ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 99.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,421 INFO L158 Benchmark]: TraceAbstraction took 4168.97ms. Allocated memory is still 176.2MB. Free memory was 98.7MB in the beginning and 58.7MB in the end (delta: 40.0MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,422 INFO L158 Benchmark]: Witness Printer took 55.79ms. Allocated memory is still 176.2MB. Free memory was 58.7MB in the beginning and 55.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-24 23:19:55,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 176.2MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.38ms. Allocated memory is still 176.2MB. Free memory was 128.0MB in the beginning and 116.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.17ms. Allocated memory is still 176.2MB. Free memory was 116.2MB in the beginning and 115.4MB in the end (delta: 746.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.29ms. Allocated memory is still 176.2MB. Free memory was 115.4MB in the beginning and 113.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.16ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 99.5MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4168.97ms. Allocated memory is still 176.2MB. Free memory was 98.7MB in the beginning and 58.7MB in the end (delta: 40.0MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. * Witness Printer took 55.79ms. Allocated memory is still 176.2MB. Free memory was 58.7MB in the beginning and 55.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 78 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 SizeOfPredicates, 2 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 23/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:19:55,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE