./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 20:57:40,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 20:57:40,296 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 20:57:40,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 20:57:40,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 20:57:40,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 20:57:40,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 20:57:40,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 20:57:40,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 20:57:40,326 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 20:57:40,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 20:57:40,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 20:57:40,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 20:57:40,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 20:57:40,332 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 20:57:40,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 20:57:40,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 20:57:40,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 20:57:40,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 20:57:40,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 20:57:40,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 20:57:40,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 20:57:40,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 20:57:40,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 20:57:40,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 20:57:40,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 20:57:40,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 20:57:40,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 20:57:40,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 20:57:40,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 20:57:40,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 20:57:40,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 20:57:40,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:57:40,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 20:57:40,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 20:57:40,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 20:57:40,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 20:57:40,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 20:57:40,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 20:57:40,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 20:57:40,339 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 20:57:40,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 20:57:40,340 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6604dbb2462dfab53c0d37d83d08add09bc53abffb53773fd7099f9e7acddff3 [2024-11-19 20:57:40,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 20:57:40,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 20:57:40,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 20:57:40,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 20:57:40,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 20:57:40,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-11-19 20:57:42,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 20:57:42,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 20:57:42,260 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2024-11-19 20:57:42,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a491c61cb/9544f9587e994ef197b52ca1279c34ff/FLAG2348876bd [2024-11-19 20:57:42,278 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a491c61cb/9544f9587e994ef197b52ca1279c34ff [2024-11-19 20:57:42,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 20:57:42,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 20:57:42,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 20:57:42,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 20:57:42,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 20:57:42,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68834918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42, skipping insertion in model container [2024-11-19 20:57:42,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 20:57:42,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2024-11-19 20:57:42,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:57:42,485 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 20:57:42,497 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2024-11-19 20:57:42,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:57:42,517 INFO L204 MainTranslator]: Completed translation [2024-11-19 20:57:42,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42 WrapperNode [2024-11-19 20:57:42,518 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 20:57:42,519 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 20:57:42,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 20:57:42,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 20:57:42,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,550 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-19 20:57:42,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 20:57:42,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 20:57:42,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 20:57:42,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 20:57:42,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,578 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 20:57:42,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 20:57:42,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 20:57:42,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 20:57:42,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 20:57:42,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (1/1) ... [2024-11-19 20:57:42,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:57:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:42,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 20:57:42,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 20:57:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 20:57:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 20:57:42,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 20:57:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 20:57:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 20:57:42,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 20:57:42,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 20:57:42,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 20:57:42,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 20:57:42,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 20:57:42,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 20:57:42,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 20:57:42,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 20:57:42,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 20:57:42,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 20:57:42,784 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 20:57:42,786 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 20:57:42,970 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-19 20:57:42,970 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 20:57:42,987 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 20:57:42,987 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 20:57:42,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:57:42 BoogieIcfgContainer [2024-11-19 20:57:42,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 20:57:42,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 20:57:42,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 20:57:42,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 20:57:42,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:57:42" (1/3) ... [2024-11-19 20:57:42,994 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3b4053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:57:42, skipping insertion in model container [2024-11-19 20:57:42,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:57:42" (2/3) ... [2024-11-19 20:57:42,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3b4053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:57:42, skipping insertion in model container [2024-11-19 20:57:42,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:57:42" (3/3) ... [2024-11-19 20:57:42,998 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2024-11-19 20:57:43,012 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 20:57:43,012 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 20:57:43,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 20:57:43,089 INFO L333 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=LoopHeads, 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;@572d4142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 20:57:43,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 20:57:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 20:57:43,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:43,102 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:43,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:43,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash -116286682, now seen corresponding path program 1 times [2024-11-19 20:57:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32270462] [2024-11-19 20:57:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-19 20:57:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:57:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32270462] [2024-11-19 20:57:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32270462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:57:43,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:57:43,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 20:57:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406805855] [2024-11-19 20:57:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:57:43,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 20:57:43,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:43,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 20:57:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 20:57:43,475 INFO L87 Difference]: Start difference. First operand has 31 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:43,506 INFO L93 Difference]: Finished difference Result 60 states and 87 transitions. [2024-11-19 20:57:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 20:57:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-19 20:57:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:43,516 INFO L225 Difference]: With dead ends: 60 [2024-11-19 20:57:43,516 INFO L226 Difference]: Without dead ends: 29 [2024-11-19 20:57:43,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 20:57:43,521 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:43,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:57:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-19 20:57:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-19 20:57:43,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-19 20:57:43,560 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2024-11-19 20:57:43,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:43,560 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-19 20:57:43,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-19 20:57:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 20:57:43,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:43,562 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:43,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 20:57:43,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:43,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1691769640, now seen corresponding path program 1 times [2024-11-19 20:57:43,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:43,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182847036] [2024-11-19 20:57:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-19 20:57:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 20:57:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:43,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182847036] [2024-11-19 20:57:43,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182847036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:43,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800675278] [2024-11-19 20:57:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:43,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:43,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:43,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:43,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 20:57:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:43,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 20:57:43,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 20:57:44,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:57:44,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800675278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:57:44,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:57:44,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-19 20:57:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114180890] [2024-11-19 20:57:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:57:44,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 20:57:44,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 20:57:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 20:57:44,106 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:44,237 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-19 20:57:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 20:57:44,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-19 20:57:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:44,239 INFO L225 Difference]: With dead ends: 37 [2024-11-19 20:57:44,239 INFO L226 Difference]: Without dead ends: 35 [2024-11-19 20:57:44,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-19 20:57:44,240 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:44,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:57:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-19 20:57:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-19 20:57:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-19 20:57:44,254 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2024-11-19 20:57:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:44,254 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-19 20:57:44,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-19 20:57:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 20:57:44,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:44,256 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:44,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 20:57:44,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:44,458 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:44,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash -789252821, now seen corresponding path program 1 times [2024-11-19 20:57:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564344134] [2024-11-19 20:57:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:44,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-19 20:57:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:44,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 20:57:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:44,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564344134] [2024-11-19 20:57:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564344134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293106354] [2024-11-19 20:57:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:44,618 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:44,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 20:57:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:44,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 20:57:44,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:44,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:57:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:44,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293106354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:57:44,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:57:44,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 20:57:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617340065] [2024-11-19 20:57:44,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:57:44,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 20:57:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 20:57:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-19 20:57:44,734 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 20:57:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:44,778 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2024-11-19 20:57:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 20:57:44,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-11-19 20:57:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:44,779 INFO L225 Difference]: With dead ends: 65 [2024-11-19 20:57:44,780 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 20:57:44,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:57:44,781 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:44,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 111 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:57:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 20:57:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-19 20:57:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:44,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-19 20:57:44,789 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 24 [2024-11-19 20:57:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:44,789 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-19 20:57:44,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 20:57:44,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-19 20:57:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 20:57:44,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:44,791 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:44,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 20:57:44,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 20:57:44,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:44,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -821774159, now seen corresponding path program 2 times [2024-11-19 20:57:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:44,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231177555] [2024-11-19 20:57:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 20:57:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 20:57:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 20:57:45,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231177555] [2024-11-19 20:57:45,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231177555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:45,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926525798] [2024-11-19 20:57:45,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 20:57:45,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:45,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:45,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:45,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 20:57:45,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 20:57:45,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 20:57:45,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 20:57:45,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-19 20:57:45,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:57:45,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926525798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:57:45,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:57:45,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-19 20:57:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605867578] [2024-11-19 20:57:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:57:45,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 20:57:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 20:57:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:57:45,276 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:45,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:45,288 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2024-11-19 20:57:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 20:57:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-19 20:57:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:45,290 INFO L225 Difference]: With dead ends: 53 [2024-11-19 20:57:45,291 INFO L226 Difference]: Without dead ends: 43 [2024-11-19 20:57:45,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 20:57:45,292 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 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 [2024-11-19 20:57:45,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:57:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-19 20:57:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-19 20:57:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-19 20:57:45,305 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2024-11-19 20:57:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:45,306 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-19 20:57:45,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 20:57:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-19 20:57:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 20:57:45,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:45,308 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:45,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 20:57:45,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:45,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:45,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2084528089, now seen corresponding path program 1 times [2024-11-19 20:57:45,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628127727] [2024-11-19 20:57:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-19 20:57:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 20:57:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 20:57:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 20:57:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 20:57:45,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:45,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628127727] [2024-11-19 20:57:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628127727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:45,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834681728] [2024-11-19 20:57:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:45,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:45,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:45,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:45,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 20:57:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:45,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 20:57:45,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 20:57:45,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:57:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 20:57:45,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834681728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:57:45,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:57:45,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 20:57:45,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449606369] [2024-11-19 20:57:45,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:57:45,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 20:57:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 20:57:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-19 20:57:45,956 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 20:57:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:46,151 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-19 20:57:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 20:57:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 43 [2024-11-19 20:57:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:46,152 INFO L225 Difference]: With dead ends: 79 [2024-11-19 20:57:46,153 INFO L226 Difference]: Without dead ends: 51 [2024-11-19 20:57:46,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-19 20:57:46,154 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:46,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 165 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 20:57:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-19 20:57:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-19 20:57:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2024-11-19 20:57:46,161 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 43 [2024-11-19 20:57:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:46,162 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2024-11-19 20:57:46,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 20:57:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2024-11-19 20:57:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 20:57:46,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:46,163 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:46,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 20:57:46,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:46,364 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:46,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash -46837221, now seen corresponding path program 2 times [2024-11-19 20:57:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392975099] [2024-11-19 20:57:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:46,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 20:57:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:46,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 20:57:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:46,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-19 20:57:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:46,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-19 20:57:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 20:57:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392975099] [2024-11-19 20:57:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392975099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916841508] [2024-11-19 20:57:46,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 20:57:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:46,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:46,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:46,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 20:57:47,033 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 20:57:47,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 20:57:47,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 20:57:47,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 20:57:47,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:57:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 20:57:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916841508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:57:47,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:57:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 20:57:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996622117] [2024-11-19 20:57:47,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:57:47,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 20:57:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 20:57:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-11-19 20:57:47,418 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 20:57:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:49,609 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2024-11-19 20:57:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 20:57:49,611 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 55 [2024-11-19 20:57:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:49,612 INFO L225 Difference]: With dead ends: 103 [2024-11-19 20:57:49,612 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 20:57:49,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 20:57:49,613 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 14 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:49,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 327 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 20:57:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 20:57:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-19 20:57:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 20:57:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2024-11-19 20:57:49,624 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 55 [2024-11-19 20:57:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:49,626 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2024-11-19 20:57:49,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-19 20:57:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2024-11-19 20:57:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-19 20:57:49,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:57:49,628 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:57:49,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 20:57:49,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:49,832 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:57:49,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:57:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1782199293, now seen corresponding path program 3 times [2024-11-19 20:57:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:57:49,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12007589] [2024-11-19 20:57:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:57:49,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:57:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:50,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-19 20:57:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:50,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 20:57:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:50,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-19 20:57:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:50,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-19 20:57:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:57:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 20:57:50,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:57:50,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12007589] [2024-11-19 20:57:50,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12007589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:57:50,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689669311] [2024-11-19 20:57:50,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 20:57:50,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:50,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:57:50,608 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:57:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 20:57:50,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 20:57:50,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 20:57:50,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 20:57:50,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:57:51,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,734 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:57:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:57:51,738 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:57:51,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:57:51,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 44 [2024-11-19 20:57:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-19 20:57:51,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:57:54,520 INFO L349 Elim1Store]: treesize reduction 135, result has 20.1 percent of original size [2024-11-19 20:57:54,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 215 treesize of output 131 [2024-11-19 20:57:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-19 20:57:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689669311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 20:57:54,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 20:57:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 15] total 48 [2024-11-19 20:57:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637645709] [2024-11-19 20:57:54,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 20:57:54,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 20:57:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:57:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 20:57:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2095, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 20:57:54,970 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 48 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 8 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-19 20:57:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:57:57,637 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2024-11-19 20:57:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 20:57:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 8 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 79 [2024-11-19 20:57:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:57:57,638 INFO L225 Difference]: With dead ends: 113 [2024-11-19 20:57:57,638 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 20:57:57,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=375, Invalid=5631, Unknown=0, NotChecked=0, Total=6006 [2024-11-19 20:57:57,641 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 20:57:57,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 525 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 20:57:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 20:57:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 20:57:57,642 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) [2024-11-19 20:57:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 20:57:57,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2024-11-19 20:57:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:57:57,643 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 20:57:57,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.3488372093023258) internal successors, (101), 43 states have internal predecessors, (101), 8 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-19 20:57:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 20:57:57,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 20:57:57,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 20:57:57,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 20:57:57,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:57:57,850 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-11-19 20:57:57,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 20:57:58,102 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 20:57:58,113 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-11-19 20:57:58,117 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,117 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,117 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,118 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,118 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,118 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,118 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-11-19 20:57:58,118 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-11-19 20:57:58,123 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,123 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,123 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,123 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-11-19 20:57:58,123 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-11-19 20:57:58,126 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] [2024-11-19 20:57:58,126 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#array~0!offset [2024-11-19 20:57:58,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:57:58 BoogieIcfgContainer [2024-11-19 20:57:58,134 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 20:57:58,134 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 20:57:58,134 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 20:57:58,135 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 20:57:58,135 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:57:42" (3/4) ... [2024-11-19 20:57:58,138 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 20:57:58,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-19 20:57:58,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-19 20:57:58,144 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-19 20:57:58,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 20:57:58,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 20:57:58,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 20:57:58,235 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 20:57:58,236 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 20:57:58,236 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 20:57:58,236 INFO L158 Benchmark]: Toolchain (without parser) took 15954.58ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 101.8MB in the beginning and 183.3MB in the end (delta: -81.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,236 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 20:57:58,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.38ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 88.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.42ms. Allocated memory is still 155.2MB. Free memory was 88.6MB in the beginning and 87.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,237 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 155.2MB. Free memory was 87.0MB in the beginning and 85.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,237 INFO L158 Benchmark]: RCFGBuilder took 391.30ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 72.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,237 INFO L158 Benchmark]: TraceAbstraction took 15144.35ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 71.5MB in the beginning and 188.6MB in the end (delta: -117.1MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,237 INFO L158 Benchmark]: Witness Printer took 101.29ms. Allocated memory is still 245.4MB. Free memory was 188.6MB in the beginning and 183.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 20:57:58,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.38ms. Allocated memory is still 155.2MB. Free memory was 101.5MB in the beginning and 88.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.42ms. Allocated memory is still 155.2MB. Free memory was 88.6MB in the beginning and 87.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 155.2MB. Free memory was 87.0MB in the beginning and 85.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 391.30ms. Allocated memory is still 155.2MB. Free memory was 85.1MB in the beginning and 72.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15144.35ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 71.5MB in the beginning and 188.6MB in the end (delta: -117.1MB). Peak memory consumption was 94.5MB. Max. memory is 16.1GB. * Witness Printer took 101.29ms. Allocated memory is still 245.4MB. Free memory was 188.6MB in the beginning and 183.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[~#array~0!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#array~0!offset * 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: 26]: 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 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 7, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 1363 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1169 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2825 IncrementalHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 194 mSDtfsCounter, 2825 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 593 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 100, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 526 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 710 ConstructedInterpolants, 3 QuantifiedInterpolants, 2978 SizeOfPredicates, 13 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 1150/2004 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: 40]: Loop Invariant Derived loop invariant: (loop_entered == 0) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((long long) index2 + 1) % 4294967296) <= 99999) && (loop_entered == 1)) && ((((index1 + 4294967295) % 4294967296) + 1) <= (((long long) index2 + 1) % 4294967296))) || ((loop_entered == 0) && (index2 <= 99999))) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((((long long) index2 + 1) % 4294967296) <= 99999) && ((((index1 + 4294967295) % 4294967296) + 1) <= (((long long) index2 + 1) % 4294967296))) || ((((long long) index1 + 1) <= index2) && (index2 <= 99999))) - ProcedureContractResult [Line: 20]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 23]: 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! [2024-11-19 20:57:58,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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