./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.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 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.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 d998c441c771938676edf06a0e9387fce091f1e4d7230def291c87707c204f78 --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-27b4987-m [2024-09-21 11:44:44,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:44:44,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:44:44,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:44:44,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:44:44,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:44:44,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:44:44,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:44:44,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:44:44,960 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:44:44,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:44:44,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:44:44,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:44:44,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:44:44,966 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:44:44,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:44:44,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:44:44,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:44:44,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:44:44,967 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:44:44,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:44:44,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:44:44,968 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:44:44,968 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:44:44,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:44:44,969 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:44:44,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:44:44,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:44:44,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:44:44,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:44:44,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:44:44,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:44:44,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:44,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:44:44,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:44:44,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:44:44,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:44:44,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:44:44,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:44:44,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:44:44,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:44:44,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:44:44,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d998c441c771938676edf06a0e9387fce091f1e4d7230def291c87707c204f78 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:44:45,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:44:45,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:44:45,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:44:45,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:44:45,293 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:44:45,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2024-09-21 11:44:46,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:44:47,010 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:44:47,012 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound50.c [2024-09-21 11:44:47,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/f25492ddb/ce85d24314c242049054c47d809a472e/FLAGf544865f6 [2024-09-21 11:44:47,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/f25492ddb/ce85d24314c242049054c47d809a472e [2024-09-21 11:44:47,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:44:47,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:44:47,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:47,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:44:47,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:44:47,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5844261a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47, skipping insertion in model container [2024-09-21 11:44:47,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:44:47,545 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-scaling/bresenham-ll_valuebound50.c[597,610] [2024-09-21 11:44:47,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:47,578 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:44:47,590 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-scaling/bresenham-ll_valuebound50.c[597,610] [2024-09-21 11:44:47,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:44:47,609 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:44:47,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47 WrapperNode [2024-09-21 11:44:47,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:44:47,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:47,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:44:47,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:44:47,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,627 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:44:47,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:44:47,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:44:47,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:44:47,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:44:47,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,652 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]. [2024-09-21 11:44:47,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:44:47,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:44:47,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:44:47,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:44:47,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (1/1) ... [2024-09-21 11:44:47,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:44:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:47,694 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) [2024-09-21 11:44:47,700 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 [2024-09-21 11:44:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:44:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-21 11:44:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-21 11:44:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:44:47,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:44:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:44:47,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:44:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:44:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:44:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:44:47,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:44:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:44:47,816 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:44:47,819 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:44:47,976 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-21 11:44:47,976 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:44:47,999 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:44:47,999 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:44:48,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:48 BoogieIcfgContainer [2024-09-21 11:44:48,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:44:48,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:44:48,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:44:48,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:44:48,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:44:47" (1/3) ... [2024-09-21 11:44:48,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b5a304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:48, skipping insertion in model container [2024-09-21 11:44:48,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:44:47" (2/3) ... [2024-09-21 11:44:48,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b5a304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:44:48, skipping insertion in model container [2024-09-21 11:44:48,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:48" (3/3) ... [2024-09-21 11:44:48,007 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound50.c [2024-09-21 11:44:48,020 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:44:48,021 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:44:48,075 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:44:48,080 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;@50e1d244, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:44:48,081 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:44:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 11:44:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:48,091 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:48,092 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:48,093 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:48,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1345059158, now seen corresponding path program 1 times [2024-09-21 11:44:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:48,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512080611] [2024-09-21 11:44:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:48,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:48,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:48,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:48,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:48,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512080611] [2024-09-21 11:44:48,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512080611] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:48,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:48,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:44:48,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955741447] [2024-09-21 11:44:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:48,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:44:48,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:44:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:44:48,308 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-21 11:44:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:48,334 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-09-21 11:44:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:44:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 22 [2024-09-21 11:44:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:48,342 INFO L225 Difference]: With dead ends: 54 [2024-09-21 11:44:48,342 INFO L226 Difference]: Without dead ends: 26 [2024-09-21 11:44:48,345 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 [2024-09-21 11:44:48,348 INFO L434 NwaCegarLoop]: 31 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, 31 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 [2024-09-21 11:44:48,349 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:44:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-21 11:44:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-09-21 11:44:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-21 11:44:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-21 11:44:48,381 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2024-09-21 11:44:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:48,382 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-21 11:44:48,382 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-09-21 11:44:48,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-21 11:44:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-21 11:44:48,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:48,384 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:48,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:44:48,385 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:48,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 745253850, now seen corresponding path program 1 times [2024-09-21 11:44:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:48,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856874015] [2024-09-21 11:44:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:48,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469373791] [2024-09-21 11:44:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:48,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:48,439 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) [2024-09-21 11:44:48,441 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:44:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:48,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:48,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:48,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856874015] [2024-09-21 11:44:48,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:48,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469373791] [2024-09-21 11:44:48,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469373791] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:48,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:44:48,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-21 11:44:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823155399] [2024-09-21 11:44:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:48,699 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:48,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-21 11:44:48,701 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-09-21 11:44:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:48,827 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-09-21 11:44:48,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22 [2024-09-21 11:44:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:48,831 INFO L225 Difference]: With dead ends: 38 [2024-09-21 11:44:48,831 INFO L226 Difference]: Without dead ends: 36 [2024-09-21 11:44:48,832 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:44:48,833 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:48,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-21 11:44:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2024-09-21 11:44:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-09-21 11:44:48,844 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2024-09-21 11:44:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:48,845 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-09-21 11:44:48,845 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-09-21 11:44:48,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-09-21 11:44:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 11:44:48,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:48,847 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:48,860 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:44:49,049 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 [2024-09-21 11:44:49,049 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:49,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -291852925, now seen corresponding path program 1 times [2024-09-21 11:44:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:49,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503152489] [2024-09-21 11:44:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:49,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:44:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503152489] [2024-09-21 11:44:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503152489] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921123917] [2024-09-21 11:44:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:49,437 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) [2024-09-21 11:44:49,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:44:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:49,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:44:49,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:49,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:44:49,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921123917] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:44:49,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:44:49,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-09-21 11:44:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834761606] [2024-09-21 11:44:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:44:49,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:44:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:49,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:44:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:44:49,648 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 11:44:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:49,752 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-09-21 11:44:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:44:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-09-21 11:44:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:49,754 INFO L225 Difference]: With dead ends: 42 [2024-09-21 11:44:49,755 INFO L226 Difference]: Without dead ends: 34 [2024-09-21 11:44:49,756 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:44:49,758 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:49,759 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:44:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-21 11:44:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-09-21 11:44:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-09-21 11:44:49,772 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2024-09-21 11:44:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:49,773 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-09-21 11:44:49,774 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-21 11:44:49,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-09-21 11:44:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 11:44:49,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:49,776 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:49,793 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:44:49,977 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 [2024-09-21 11:44:49,978 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:49,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:49,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1466394034, now seen corresponding path program 1 times [2024-09-21 11:44:49,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:49,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785399723] [2024-09-21 11:44:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:49,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:44:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867222844] [2024-09-21 11:44:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:49,999 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) [2024-09-21 11:44:50,001 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:44:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:50,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-21 11:44:50,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:44:50,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785399723] [2024-09-21 11:44:50,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:44:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867222844] [2024-09-21 11:44:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867222844] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:50,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:44:50,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-09-21 11:44:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328785760] [2024-09-21 11:44:50,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:50,330 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-21 11:44:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:50,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-21 11:44:50,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-21 11:44:50,331 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-21 11:44:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:50,608 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-09-21 11:44:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:44:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 31 [2024-09-21 11:44:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:50,610 INFO L225 Difference]: With dead ends: 47 [2024-09-21 11:44:50,612 INFO L226 Difference]: Without dead ends: 43 [2024-09-21 11:44:50,612 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:44:50,614 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:50,615 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:44:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-21 11:44:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2024-09-21 11:44:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:44:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-09-21 11:44:50,635 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2024-09-21 11:44:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:50,636 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-09-21 11:44:50,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-21 11:44:50,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-09-21 11:44:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-21 11:44:50,637 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:44:50,637 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:44:50,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 11:44:50,841 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 [2024-09-21 11:44:50,842 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:44:50,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash 313414799, now seen corresponding path program 1 times [2024-09-21 11:44:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:44:50,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226257602] [2024-09-21 11:44:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:44:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:44:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 11:44:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:44:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:44:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:44:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:44:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226257602] [2024-09-21 11:44:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226257602] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:44:51,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782529475] [2024-09-21 11:44:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:44:51,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:44:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:44:51,168 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) [2024-09-21 11:44:51,169 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:44:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:44:51,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-21 11:44:51,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:44:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 11:44:51,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:44:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-21 11:44:52,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782529475] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:44:52,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:44:52,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2024-09-21 11:44:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465441809] [2024-09-21 11:44:52,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:44:52,261 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-21 11:44:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:44:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-21 11:44:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-09-21 11:44:52,263 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-21 11:44:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:44:54,469 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-09-21 11:44:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-21 11:44:54,470 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 38 [2024-09-21 11:44:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:44:54,470 INFO L225 Difference]: With dead ends: 51 [2024-09-21 11:44:54,470 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:44:54,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=388, Invalid=1682, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 11:44:54,472 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-21 11:44:54,473 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 182 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-21 11:44:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:44:54,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:44:54,473 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) [2024-09-21 11:44:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:44:54,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2024-09-21 11:44:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:44:54,474 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:44:54,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 10 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-09-21 11:44:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:44:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:44:54,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:44:54,477 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:44:54,494 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:44:54,681 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 [2024-09-21 11:44:54,684 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-09-21 11:44:54,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:44:55,582 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:44:55,601 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-21 11:44:55,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:44:55 BoogieIcfgContainer [2024-09-21 11:44:55,608 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:44:55,608 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:44:55,608 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:44:55,608 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:44:55,609 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:44:48" (3/4) ... [2024-09-21 11:44:55,610 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:44:55,660 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:44:55,660 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:44:55,660 INFO L158 Benchmark]: Toolchain (without parser) took 8302.27ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 132.4MB in the beginning and 142.1MB in the end (delta: -9.7MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,660 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:44:55,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.69ms. Allocated memory is still 165.7MB. Free memory was 132.4MB in the beginning and 120.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.88ms. Allocated memory is still 165.7MB. Free memory was 120.6MB in the beginning and 119.8MB in the end (delta: 827.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,661 INFO L158 Benchmark]: Boogie Preprocessor took 34.20ms. Allocated memory is still 165.7MB. Free memory was 119.8MB in the beginning and 117.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,662 INFO L158 Benchmark]: RCFGBuilder took 337.81ms. Allocated memory is still 165.7MB. Free memory was 117.7MB in the beginning and 104.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,662 INFO L158 Benchmark]: TraceAbstraction took 7605.88ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 103.8MB in the beginning and 145.2MB in the end (delta: -41.4MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,662 INFO L158 Benchmark]: Witness Printer took 51.81ms. Allocated memory is still 220.2MB. Free memory was 145.2MB in the beginning and 142.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:44:55,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory is still 130.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.69ms. Allocated memory is still 165.7MB. Free memory was 132.4MB in the beginning and 120.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.88ms. Allocated memory is still 165.7MB. Free memory was 120.6MB in the beginning and 119.8MB in the end (delta: 827.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.20ms. Allocated memory is still 165.7MB. Free memory was 119.8MB in the beginning and 117.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.81ms. Allocated memory is still 165.7MB. Free memory was 117.7MB in the beginning and 104.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7605.88ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 103.8MB in the beginning and 145.2MB in the end (delta: -41.4MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. * Witness Printer took 51.81ms. Allocated memory is still 220.2MB. Free memory was 145.2MB in the beginning and 142.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 16]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 555 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 455 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 587 IncrementalHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 100 mSDtfsCounter, 587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 56, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 269 ConstructedInterpolants, 3 QuantifiedInterpolants, 1097 SizeOfPredicates, 11 NumberOfNonLiveVariables, 342 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 64/81 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: 32]: Loop Invariant Derived loop invariant: (((((((((__int128) y * x) == (((__int128) X * y) + y)) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) && (Y <= 50)) && (0 <= Y)) && (0 <= X)) && (X <= 50)) || ((((((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v)) && (Y <= 50)) && (0 <= Y)) && (0 <= X)) && (X <= 50))) - ProcedureContractResult [Line: 10]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 13]: 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! [2024-09-21 11:44:55,690 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